<b>======================================================================
                  Microsoft Windows NT 4.0 Workstation
                       and Windows NT 4.0 Server
                            Service Pack 4
======================================================================

        (c) Copyright Microsoft Corporation, 1998

This document provides information about Microsoft Windows NT 4.0
Workstation and Windows NT 4.0 Server Service Pack 4 (SP4), as well as
answers to questions that you might have.

------------------------
HOW TO USE THIS DOCUMENT
------------------------

To view Readme.txt on the screen in Notepad, maximize the Notepad
window. For best viewing, click Edit, and then click Word Wrap.

To print Readme.txt, open it in Notepad or another word processor,
click the File menu, and then click Print. For best printing results,
click Edit, click Set Font, type 9 in the Size box, and then click OK.

For a current list of computer and hardware peripherals supported by
Windows NT 4.0, see the Windows NT Hardware Compatibility List
at http://www.microsoft.com/hwtest/hcl.

=========
CONTENTS
=========
1.0  INTRODUCTION
     1.1  What's New in Service Pack 4
     1.2  Downloading and Extracting the Service Pack

2.0  INSTALLATION INSTRUCTIONS FOR WINDOWS NT 4.0 SERVICE PACK 4
     2.1  Before You Install the Service Pack
     2.2  Installing the Service Pack
     2.3  Service Pack Uninstall
     2.4  Year 2000 Service Pack Installation

3.0  USER NOTES
     3.1  Emergency Repair Disk
     3.2  Adding New Components to the System
     3.3  Installing Symbol Files from the CD
     3.4  Hardware Compatibility with Windows NT 4.0
     3.5  DIGITAL Alpha Notes
     3.6  Running Windows NT Administrative Tools from Remote Server
     3.7  CryptoAPI and Authenticode
     3.8  Uninstalling Internet Explorer
     3.9  Certificate Server Notes
     3.10 Internet Information Server 4.0, Secure Sockets Layer and
          Root CA Certificates
     3.11 Message Queue Notes
     3.12 Installing COM Internet Services
     3.13 Event Log Service
     3.14 Upgrading a Cluster to SP4

4.0  ADDITIONAL FIXES AND WORKAROUNDS
     4.1  Installing Windows NT 4.0 on a Windows NT 5.0 Computer
     4.2  Dual Booting Between Versions of Windows NT 4.0 and
          Windows NT 5.0
     4.3  NTFS Version 4 and NTFS Version 5 Support
     4.4  Installing SP4 on a Windows NT Server Enterprise Edition
          System
     4.5  Internet Information Server 4.0
     4.6  Security Configuration Manager
     4.7  Updating Audio Drivers
     4.8  Microsoft Proxy Server

5.0  APPLICATION NOTES
     5.1  CheckIt Diagnostic Kit 4.0 by Touchstone
     5.2  Norton CrashGuard 2.0 for Windows NT
     5.3  Inoculan 4.0
     5.4  Exceed
     5.5  Terminal Server
     5.6  Microsoft NetMeeting Y2K and Security Issues
     5.7  Numega SoftIce
     5.8  Microsoft BackOffice Small Business Server
     5.9  Rational Visual Quantify Version 4
     5.10 Microsoft IntelliPoint


==================
1.0  INTRODUCTION
==================
This release of Microsoft Windows NT 4.0 Service Pack 4 (SP4) is easy
to apply while Windows NT is running and updates all files that are
older than those included in this Windows NT Service Pack.
Service Pack releases are cumulative and contain all previous
Service Pack fixes and any new fixes created after Service Pack 3.

IMPORTANT: SP4 contains only 40-bit encryption.
This release isn't supported for installation on an existing North
American 128-bit installation of Windows NT 4.0. If you install SP4
on a computer with 128-bit encryption, system services might fail
to start.

IMPORTANT: It's recommended that you stop running any critical
services before you apply Windows NT 4.0 SP4. For more preinstallation
recommendations, see section 2.1, "Before You Install the Service Pack."

----------------------------------
1.1  What's New in Service Pack 4
----------------------------------
1.1.1 Active Accessibility Support
Microsoft Active Accessibility (MSAA) is a COM-based standard method
by which a utility program interacts with an application's user
interface (UI). Using MSAA applications can expose all UI elements
and objects with standard properties and methods. SP4 includes five
new application programming interfaces (APIs). These new APIs include:
* GetGUIThreadInfo
* GetAncestor
* RealChildWindowsFromPoint
* RealGetWindowClassA
* RealGetWindowClassW

1.1.2 DCOM/HTTP Tunneling
This update allows DCOM client/server communication to cross
firewalls over the HTTP protocol port. The new protocol "Tunneling
TCP" is used like other DCOM protocols. The new moniker type OBJREF
is passed in HTML to the client. The benefits of Tunneling TCP
include high performance, use of existing open ports in the firewall,
and control of client access for proxy administrators. For more
information, see http://www.microsoft.com/com.

For instructions on installing Tunneling TCP, see section 3.11,
"Installing COM Internet Services" under User Notes.

1.1.3 Euro Key Patch
The Euro Key Patch is an update to include the new European "euro"
currency symbol. The update supplies the core fonts (Arial, Courier
New, and Times New Roman) and the keyboard drivers.

1.1.4 InternetGroup Management Protocol (IGMP) v2
IGMPv2 allows a computer to inform the router that it's leaving a
group. This update enables the router to determine if there are no
more members in a group and then executes a command to stop forwarding
mcast packets on to the link. This update is useful when users are
frequently joining and leaving groups.

1.1.5 Microsoft File and Print Service for NetWare (FPNW) Support
for Client32
Microsoft File and Print Services for NetWare permits the Windows NT
4.0 Server to act as a NetWare 3.X Server and is able to process file
and print requests from NetWare clients without changing or updating
the NetWare client software. This Service Pack provides an update that
allows Windows NT 4.0 to support NetWare's Client32. This update
installs only on those computers that have the FPNW service already
installed.

1.1.6 Proquota.exe
The Proquota.exe is a utility that can be set up to monitor the size
of users' profiles. If an individual user's profile exceeds the
predetermined file limit, the user won't be able to log off of the
computer until the user reduces the size of the file.

1.1.7 Remote Winsock (DNS/Port 53)
Proxies or firewalls will often disable the Domain Name System (DNS)
port number 53 in order to deter external sites from querying the
internal DNS structure. As a result, inbound response packets sent
on port 53 can't be received. SP4 provides a solution to change
the Windows NT DNS server port number and configure it to use a
different port number when connecting outbound.

To enable this feature, a registry value "DWORD" is created. Locate \services\dns\parameters\SendOnNonDnsPort and set to a non-zero value
to go off port 53. If the value is  1024 the server will use the port number
specified.

1.1.8 Remote Procedure Calls (RPC) Enhancements for Visual Basic (VB)
RPC enhancements for VB have been provided in this release. In VB, a
"User Data Type (UDT)" is added allowing the TypeLib arrangement of
structures. These new user interfaces, IRecordInfo, provide UDT
information and a UDT field for the Access Database.

1.1.9 Routing Information Protocol (RIP) Listener
If you utilize RIP Listener on a computer running Windows NT 4.0,
you can use SP4 to update this component. If you want to install
RIP Listener after you apply SP4, use the following procedure.

>>>To install the RIP Listener:
1.  Insert the SP4 CD into the disc drive, and change the folder to
    \I386 (or \Alpha).
2.  Copy Oemnsvir.wks to D:\<winntsystemroot>\system32\oemnsvir.inf.
3.  Click Start, point to Settings, and click Control Panel. Double-
    click Network, and on the Services tab, click Add.
4.  In Network Service, select RIP for Internet Protocol, and then
    click OK.
5.  In the Windows NT Setup dialog box, type the path for the location
    of the SP4 files and click OK.

1.1.10 Visual Studio-MICS
This Service Pack includes an update to Visual Studio called Visual
Studio Analyzer Events. Visual Studio Analyzer Events provides a
graphical representation of high-level behaviors and their solutions.
Use Visual Studio Analyzer Events to view graphically simple tables
of event logs, the system's performance, and Windows NT Performance
Monitor (NT PerfMon), as well as other system data.

1.1.11 Year 2000 (Y2K) Fixes
This Service Pack contains fixes for known Year 2000 issues for
Windows NT 4.0, including:
* The User Manager and User Manager for Domains recognize the year
  2000 as a leap year.
* The Date/Time Control Panel applet can update the system clock.
* Find Files supports only numeric character recognition in the
  decades field.
* Word document properties recognize both 1900 and 2000 as valid
  centuries and support four-digit years.
* The Dynamic Host Configuration Protocol (DHCP) administrators
  program supports displaying the years between 2000-2009 with a
  minimum of two digits.
For more information, see section 2.4, "Year 2000 Service Pack
Installation."

1.1.12 Compaq Fiber Storage Driver
This driver and .Inf are located in the \Drvlib folder. When installed,
the Compaq fiber storage driver along with the .Inf provides support
for Compaq fiber storage devices. The certified devices are:
* Compaq Fiber Channel Host Controller/P for PCI.
* Compaq Fiber Channel Host Controller/E for EISA.

1.1.13 Internet Explorer 4.01 Service Pack 1
Internet Explorer 4.01 Service Pack 1 is located in SP4 in the
\Msie401 folder. Run Ie4setup.exe to install this version of Internet
Explorer on your computer.

1.1.14 Message Queue (MSMQ) for Windows 95 Client
This Service Pack also includes MSMQ Windows 95 Client fixes, located
in the \Support\Msmq.95 folder. Most problems that are mentioned in
section 3.10, "Message Queue (MSMQ) Notes," also apply to Windows 95.
In addition, the Windows 95 MSMQ update fixes a problem causing long
delays with MQOpenQueue() and MQIS operations on offline computers.
This MSMQ Windows 95 update doesn't have an uninstall option.

1.1.15 Option Pack Fixes
This Service Pack release includes Option Pack fixes and enhancements.
If you have the Internet Information Server version 4.0 Option Pack
installed, the Service Pack 4 update program will automatically update
the Option Pack components installed on your computer.

When beginning the installation of the Windows NT Option Pack 4.0 on
a server with Windows NT SP 4.0 and Internet Information Server 3.0,
the following message may appear:

"Setup detected that Windows NT 4.0 SP4 or greater is installed on your
machine. We haven't tested this product on SP4. Do you wish to proceed?"

The Windows NT Option Pack 4.0 is fully tested and supported to run on
servers with the Windows NT Service Pack 4.0. Click Yes to continue
Setup.

NOTE: It’s recommended that you reinstall SP4 after you install Windows
NT Option Pack 4.0. Otherwise, an MSMQ MQIS Controller installation
won’t work until the Windows NT Service Pack 4.0 is reinstalled.

    1.1.15.1 Certificate Server
    The Microsoft Certificate Server is a standards-based, highly
    customizable server application for managing the creation,
    issuance, and renewal of digital certificates. Certificate
    Server generates certificates in standard X.509 format. These
    certificates are used for a number of public-key security and
    authentication applications including, but not limited to,
    server and client authentication under the Secure Sockets
    Layer (SSL) protocol and secure e-mail using Secure/Multipurpose
    Internet Mail.

    The update to Certificate Server includes:
    * Teletex Encoding--Data encoded as teletex in a certificate
      request will be encoded as teletex data in the certificate
      issued. Formerly, this data would have been encoded as Unicode
      in the certificate issued.
    * Serial Number--Serial numbers are generated according to X.509
      standards. These serial numbers are automatically generated,
      unique, and always positive. This is to accommodate restrictive
      mail clients.
    * Backup/Restore--Specific backup requests are supported,
      including backing up keys and certificates.
    * An update to the default policy module so that mail certificates
      issued are usable by Outlook 98.
    * An update to Certificate Server to fix a problem with
      certificates issued on February 29th of a leap year.  
      Previously, the validity period would have the NotBefore and
      NotAfter dates set to the same date. With this update,
      NotBefore and NotAfter are now set correctly in the context
      of the CA validity for certificates issued on February 29th
      of a leap year.

    For information on how to use the keys and certificate backup/
    restore utility, go to the Knowledge Base at http://support.
    microsoft.com/support/ and search for KB article Q185195.

    This release of Certificate Server doesn’t support certificate
    hierarchies. However, a limited subset of the functions of
    Certificate hierarchies work specifically with Exchange.

    You can get additional information on this from a white paper
    titled "Creating Certificate Hierarchies with Microsoft
    Certificate Server Version 1.0." This is available as a self-
    extracting .exe file (Hier3.exe) on the Microsoft Web site at
    http://support.microsoft.com/support/downloads/LNP279.asp.

    1.1.15.2 Index Server
    Index Server is a content indexing engine that provides full
    text retrieval for Web sites. Index Server requires that
    Internet Information Server be installed.

    1.1.15.3 Internet Information Server (IIS)
    The following Internet Information Server version 4.0 Option
    Pack components are installed on your computer:
    1. Security Enhancements--Support for long file names for access
       restrictions on a file or a folder.
    2. Performance--Improvements on the logging and caching of
       information. These improvements include, but aren't
       limited to:
       * IIS 4.0 performance on extension mapping.
       * IIS 4.0 memory performance for mapping log files.
       * IIS 4.0 performance in mapping unmapped data files if
         memory configuration is low or stressed.

    1.1.15.4 Message Queue (MSMQ) for Windows NT
    This update to MSMQ includes:
    *  Performs cleanup of unused message file space every six hours
       to reduce disk-space usage.
       NOTE: This schedule may be configured via the
       <messagecleanupinterval> MSMQ registry key (in milliseconds).
    *  Clears all obsolete express message files when the MSMQ
       service starts.
    *  Enforces case insensitivity with foreign language characters
       in private queue names.
    *  Reduces occurrences of duplicate messages in persistent
       delivery mode.
    *  Exhibits performance counters for remote queues after a
       system recovery.
    *  Correctly shows per-session outgoing messages performance
       counters.
    *  MSMQ MQIS servers refresh cached information every 12 hours.
    *  Fixes a problem causing transactional messages to be rejected
       in some cases.
    *  Allows specifying external certificates via the MSMQ
       ActiveX components interface.
    *  Transactional messages can be read from connector queues
       after restarting the MSMQ connector application.
    *  MQSetQueueSecurity for private queue is supported.
    *  MQCreateQueue for private queues now works on Windows NT
       Server 4.0 Option Pack installations on Microsoft Cluster
       Server computers.
    *  Supports sending Microsoft PowerPoint and Microsoft Word
       documents using ActiveX components.
    *  Fails when user attempts the renewal of internal certificates
       when Primary Enterprise Controller (PEC)
       is unreachable.
    *  Machine quota limitation correctly recomputed after restarting
       the MSMQ service.
    *  MSMQ COM objects correctly process asynchronous message arrival
       events in multithreaded applications.
    *  Improved detection and reporting of corrupted message packets
       in message files that could have resulted in a hung MSMQ
       service previously.
    *  Transactional messages sent offline are no longer
       rejected with a bad message class: MQMSG_CLASS_NACK_BAD_DST_Q.  
       The symptom was that such messages were immediately routed
       to the sender's exact dead letter queue.
    *  Supports sending messages to different computers that have
       the same IP address. This can happen when a server attempts
       to send messages to two different RAS clients
       that happen to be assigned the same address one after the other.
    *  Recovers correctly when sending messages from a server to a
       client whose address is no longer valid (e.g., a RAS client
       that has timed-out). Previously, extra message traffic might
       have been generated.
    *  Asynchronous messaging now functions correctly on Japanese
       Windows 95 when using the MSMQ COM objects.
    *  Fixes a problem in the MSMQ COM objects when referencing the
       response and admin queue properties of a message for queues
       not explicitly refreshed from the MQIS.
    *  In Windows 95, calling MQOpenQueue with a DIRECT format no
       longer blocks for a long time.
    *  If the Windows NT 4.0 licensing service isn't running, then
       MSMQ per-seat licensing is no longer enforced.
    *  A specific call to MQLocateBegin no longer causes an exception
       on the MQIS server. This could have occurred previously
       when the Label restriction specified with an incorrect vt
       argument (anything other than VT_LPWSTR).
    *  MSMQ applications can be run by users logged on to local machine
       accounts. Note that this used to work anyway for shadowed
       local accounts -- i.e., for accounts that had "identical" local
       accounts (user name/password) on the server machine. The
       default security for queues created by such users is that
       everyone is granted full control (in particular, read and
       delete permissions).
    *  A new MQIS update/restore utility is supplied that enables
       administrators to seamlessly recover crashed MQIS servers.  
       See support\msmq.nt\MQISwizard.doc for more information.

    1.1.15.5 Microsoft Transaction Server (MTS)
    MTS is updated with a new Java Context class. If you're
    building applications using Visual J++, you can use the new
    Context class instead of IObjectContext. The Context class
    allows you to do the following using Visual J++:
    * Declare that the object's work is complete.
    * Prevent a transaction from being processed, either temporarily
      or permanently.
    * Instantiate other MTS objects and include their work within
      the scope of the current object's transaction.
    * Determine whether a caller is in a particular role.
    * Determine whether security is enabled.
    * Determine whether the object is executing within a transaction.
      See the Visual J++ section of the Programmer's Reference for
      complete documentation of the new class.

    1.1.15.6 SMTP, NNTP
    Simple Mail Transport Protocol (SMTP), Network News Transport
    Protocol (NNTP) enhancements are available in this Service Pack.
    SMTP now supports the following services:
    * Multiple virtual servers, or sites.
    * ETRN command for dequeuing mail over dial-up connections.
       
    >>>To enable this functionality:
    1. Create a text file with the following text:

       set obj = GetObject ( "IIS://localhost/smtpsvc" )
       obj.Put "SmtpServiceVersion", 2
       obj.SetInfo

       NOTE: This is an Active Directory Service Interface (ADSI)
       script that will update a value in the metabase.

    2. Save this file as Enable.vbs.

    3. From a command prompt, type the following and press ENTER:

       cscript enable.vbs
 
       For more information, go to the Knowledge Base at http://support.
       microsoft.com/support/ and search for KB article Q183476.

       You can also point to specific KB articles using the following
       example:
       http://support.microsoft.com/support/kb/articles/Q151/8/60.asp

1.1.16 Security Configuration Manager (SCM)
Security Configuration Manager (SCM) is an integrated security
system that gives administrators the ability to define and apply
security configurations for Windows NT Workstation and Windows NT
Server installations. SCM also has the capability to perform
inspections of the installed systems to locate any degradation in the
system's security. For further information on SCM, including
installation and usage instructions, refer to Readme.txt in the
\Mssce folder.

1.1.17 Web-based Enterprise Management (WBEM)
WBEM/WMI is Microsoft's implementation of Web-Based Enterprise
Management (WBEM), the new standard for representation of management
information as supported by the Desktop Management Task Force.  It
surfaces important management data from Windows NT and makes it freely
available to any management tool through a number of well-defined
interfaces so that management of Windows NT becomes much easier
(included on CD-ROM only). For more information on WMI, see
http://www.microsoft.com/management/wbem.

WBEM consolidates and unifies the data provided by existing
management technologies. WBEM focuses on solving real enterprise
issues by tracking problem areas from the user/application level
through the systems and network layers to remote service/server
instances. For more information, see http://wbem.freerange.com/.

You can download the Web-Based Enterprise Management Software Developer's
Kit (SDK) at http://msdn.microsoft.com/developer/sdk/wbemsdk/default.htm.

1.1.18 Microsoft Windows NT Server NetShow Services
SP4 contains an updated version of NetShow Services located on this
CD in the \NetShow folder. NetShow Services enables Internet service
providers (ISPs) and organizations to deliver the highest-quality audio
and video at every bandwidth across the Internet or enterprise networks.
This release of NetShow Services features greatly enhanced audio and
video that delivers the best user experience. Simplified setup,
configuration, and administration of the NetShow server components and
tools give ISPs a reliable and cost-effective platform for hosting large
amounts of content.

Consult the NetShow Services information page (\NetShow\ntsp4-ns.htm)
for details on installing and configuring this product. Before
installing this product, you should also carefully review the NetShow
Services release notes at \NetShow\ns-readme.htm.

1.1.19 Microsoft Windows Media Player
Microsoft Windows Media Player replaces Microsoft ActiveMovie as well
as the Microsoft NetShow Player. Windows Media Player has all the
features found in both of the other multimedia players, plus many
more. It also upgrades existing Windows Media Player and ActiveMovie
support to provide convenient access to new Windows Media content.
Windows Media Player supports most local and streaming multimedia
file types including WAV, AVI, QuickTime, RealAudio 4.0 and RealVideo
4.0. The new player takes over the class IDs of the previous players.
After you install the new player, programs that used the old class
IDs will function as usual. Windows Media Player is located in the
\Mplayer2 folder on the compact disc.

1.1.20 Security Privilege Must Be Enabled to View Security Event Log
SP4 includes a bug fix in the Event Log service that requires that
the SE_SECURITY_NAME privilege, also known as the Security privilege,
be enabled in order to view and manage the security event log.
By default, Windows NT grants the privilege to administrators and
local System. In order to take effect however, the privilege must
also be enabled in the program accessing the security event log.

Prior to this change, members of the Administrators group and services
running as local System could open the security log for read or change
access without enabling the Security privilege. If the privilege was
removed from the Administrators group, members of the Administrators
group could still manage the security log. This change enforces the
security model that administrators need to be granted the privilege
to manage the security log; they won't be able to manage the log
simply because they are members of the Administrators group.
Administrators can always grant themselves the Security privilege to
manage the security log, however, although this event can be audited.

For more information, consult the Knowledge Base at http://support.
microsoft.com/support/ and search for KB article Q188855.

1.1.21 Dynamic Host Configuration Protocol (DHCP)
This Service Pack includes several quality improvement fixes
to correct known Dynamic Host Configuration Protocol (DHCP) issues
reported for Microsoft DHCP Server, the DHCP Manager administration
tool, and for Microsoft DHCP-enabled clients running under earlier
released versions of Windows NT 4.0.

These fixes address specific problems fully described in the Q184693
"DHCP/WINS Release Notes for Windows NT 4.0 SP4 Update" article in
the Knowledge Base:

You can obtain the specific article from Microsoft Support Online at
http://support.microsoft.com/support.

1.1.22 Windows Internet Naming Service (WINS)
Windows NT Server includes the following new Windows Internet Naming
Service (WINS) and WINS Manager features:
 * Manual removal of dynamic WINS database records.
 * Multi-select operations for WINS database records.
 * Burst mode handling for WINS servers.

1.1.23 Microsoft Routing and Remote Access Service (RRAS)
SP4 can now be installed on a Windows NT 4.0 system running Routing
and Remote Access Service (RRAS). SP4 will update your RRAS system to
RRAS Hotfix 3.0 components automatically. If you install RRAS after
installing SP4, you must reinstall SP4 to get the updated RRAS files to
ensure RRAS will work properly. For more information on RRAS Hotfix 3.0,
see http://support.microsoft.com/support/kb/articles/Q189/5/94.asp.

1.1.24 PPTP Performance and Security Update
SP4 now includes new performance and security updates to PPTP that
greatly increase data transfer speeds and enhance security. The PPTP
client and server system must both be running the updated files to get
the new benefits. For more information, see http://support.microsoft.com/
support/kb/articles/q189/5/95.asp

1.1.25 NTLMv2 Security
SP4 contains an enhancement to NTLM security protocols called
NTLMv2, which significantly improves both the authentication and
session security mechanisms of NTLM. For more information, see
http://support.microsoft.com/support/kb/articles/q147/7/06.asp.

1.1.26 Secure Channel Enhancements
SP4 contains an enhancement to the secure channel protocols
used by member workstations and servers to communicate with
their domain controllers and by domain controllers to communicate
with other domain controllers. In addition to authentication, you can
now encrypt and check the integrity of these communications. For more
information, see http://support.microsoft.com/support/kb/articles/
q183/8/59.asp

1.1.27 IP Helper API (IPHLPAPI)
The IP Helper API provides Windows network configuration and statistics
information to Win32 applications. The public API is available on
Windows NT 4.0 and above, and Windows 95 and above. SP4 updates the
API with a new .dll so that applications can communicate to a TCP/IP
stack.

1.1.28 Event Log Service
This Service Pack contains new features in the Event Log Service to
assist how administrators measure the reliability and availability
of Windows NT.

The SP4 Event Log Service records three new events in the system event
log that are useful in measuring operating system availability:
* Clean Shutdown Event (Event ID: 6006)
* Dirty Shutdown Event (Event ID: 6008)
* System Version Event (Event ID: 6009)

See section 3.12, "Event Log Service," for more information.

1.1.29 Domain Name Server (DNS) Service
This Service Pack includes several quality improvement fixes to correct
known Domain Name Server (DNS) issues reported for Microsoft DNS Server
and the DNS Manager administration tool. These fixes address specific
problems described in the Q184693 "DNS/DHCP/WINS Release Notes for
Windows NT 4.0 SP4 Update" article in the Knowledge Base. You can obtain
the specific article from Microsoft Support Online at http://support.
microsoft.com/support.

------------------------------------------------
1.2  Downloading and Extracting the Service Pack
------------------------------------------------
If you have downloaded this Service Pack from an FTP site or a Web
site, you should read the release notes completely before you extract
and install the Service Pack. For this release, these self-extracting
executables are also located at the root of the CD. They are
Sp4alpha.exe for Alpha processor type systems and sp4i386 for
Intel-based systems.

After downloading the Service Pack, you'll have a compressed
executable file on your hard drive. To extract this file and begin
the installation process, for example, type Sp4i386.exe at the
command prompt or double-click the file from Windows NT Explorer.
You can also extract the file into the current folder without
launching the installation program by using the command prompt
switch /x (for example, at the command prompt, type sp4i386 /x).


================================================================
2.0  INSTALLATION INSTRUCTIONS FOR WINDOWS NT 4.0 SERVICE PACK 4
================================================================
Carefully read the installation instructions before you install
Service Pack 4, as they may have changed from previous Service Packs.

----------------------------------------
2.1  Before You Install the Service Pack
----------------------------------------
Close all active debugging sessions before installing this Service
Pack, otherwise the Update program will be unable to replace system
files that are in use. If a file is in use when you install the
Service Pack, a dialog box will appear in which you can choose to
cancel the installation or skip the file copy. It's recommended you
choose to cancel the installation, and then uninstall SP4. To do this,
run Spuninst.exe or click Start, point to Settings, click Control Panel,
double-click Add/Remove Programs, and then click Uninstall Service Pack
4. Close all active sessions on the system, and then run Update.exe
again to install the Service Pack.

Also, to maximize the ability to recover the system in the event of
installation failure, it's recommended that you do the following
before installing the Service Pack:

1.  Update the system Emergency Repair Disk using the Rdisk.exe
    command with the /s switch.
2.  Perform a full backup of the system, including the system registry
    files.
3.  Disable any nonessential third-party drivers and services (that is,
    drivers and services that aren't required to boot the system).
4.  Contact the original equipment manufacturer (OEM) that provided
    the driver or service for the updated versions of the file(s).
5.  Restart the computer and check Event Viewer to ensure there are
    no system problems that could interfere with the installation of SP4.

Users of NEC Versa 6050 or 6200 Series notebook computers, with
Windows NT version 4.0 preinstalled, should select "Yes" when SP4
Update.exe prompts you to replace the hal.dll file.

If your computer contains SystemSoft Card Wizard version 2.x or earlier,
you must obtain SystemSoft Card Wizard version 3.00.01 or greater before
installing Windows NT 4.0 Service Pack 4. Otherwise, your operating
system will no longer function. Contact SystemSoft at
http://www.systemsoft.com for further details.

Advanced Power Management isn't supported by Windows NT 4.0. As a
result, it's recommended that you remove Advanced Power Management
features before installing this Service Pack.

Power Management Utilities may not work on Windows NT 4.0 Service
Pack 4. Contact the vendor of your Power Management Utilities
for an updated version to work with Windows NT 4.0 SP4.

Do not install SP4 without the Silicon Graphics companion software.
SP4 requires additional files to update your Silicon Graphics system.
For these necessary files, visit the Silicon Graphics Web site at
http://support.sgi.com/nt.

--------------------------------
2.2  Installing the Service Pack
--------------------------------
>>>To install the Service Pack from the CD
1.  Insert the Service Pack CD into your CD-ROM drive.
2.  If a Web page opens in your browser after you insert the CD,
    click Windows NT Service Pack, and then click Install Service Pack.
3.  When you're asked whether you want to open the file Spsetup.bat
    or save it to disk, click Open and then follow the instructions
    that appear on the screen.

    NOTE: To use the uninstall feature of this Service Pack, you must
    create an Uninstall folder during the initial installation.

4.  If a Web page doesn't automatically open when you insert the CD,
    open the Command Prompt window and change the folder to the drive
    letter associated with the CD-ROM drive.
5.  Change the folder to \I386\Update or \Alpha\Update (depending
    upon whether you have an x86 or Alpha CPU), and type UPDATE.
6.  Follow the instructions that appear on the screen.

If SP4 doesn't install after you click Install Service Pack 4 from the
CD, or your browser doesn't automatically display installation
instructions when you insert the CD into your CD-ROM drive, start the
Service Pack install process manually from the CD. For more information,
see "To install the Service Pack from the CD" mentioned earlier in this
section.

NOTE: To use the uninstall feature of this Service Pack, you must create
an Uninstall folder during the initial installation.

>>>To install the Service Pack from a network drive
1.  Run the command to connect to the network drive that has the
    Service Pack files.
2.  Change the drive letter to that network drive.
3.  Change the folder to \I386\Update or \Alpha\Update (depending
    upon whether you have an x86 or Alpha CPU), and then type UPDATE.
4.  Follow the instructions that appear on the screen.

NOTE: It's recommended that you choose to create an Uninstall folder
the first time you install the Service Pack.

>>>To install the Service Pack from the Internet
Using a Web browser (such as Internet Explorer
3.0 or later), visit http://support.microsoft.com/support/ntserver/
content/servicepacks/ or http://support.microsoft.com/support/downloads/.
Click the Install Service Pack 4 option to install SP4 on your computer.
This Web page automatically detects which files need to be updated and
then copies the appropriate files to a temporary folder on your computer.
It then installs only those files that are needed to update your
computer.

NOTE:  If you use Web browsers other than Internet Explorer 3.0 or later,
you may be unable to install the Service Pack through this update method.  
If you are unable to install the Service Pack using this option, download
the entire Service Pack from the Internet onto your computer and run
update.exe locally.

There are installation switches that can be used with Update.exe. The
following syntax help is available by typing update /?:
UPDATE \[-u\] \[-f\] \[-n\] \[-o\] \[-z\] \[-q\]
    -u Unattended mode
    -f Forces other apps to close at shutdown
    -n Do not back up files for uninstall
    -o Overwrite OEM files without prompting
    -z Do not reboot when installation is complete
    -q Quiet mode - no user interaction

----------------------------
2.3  Service Pack Uninstall
----------------------------
This Service Pack contains an uninstall feature that you can use to
restore your system to its previous state.

To enable the uninstall option, run Update.exe. A subfolder in your
Windows NT folder named Uninstall will be created. This requires at
least 80 megabytes (MB) of free space on the drive on which Windows
NT is installed. This is 40 MB for the uninstall folder and 40 MB for the
Service Pack updated system files.

To uninstall SP4, double-click the Add/Remove Programs control panel.
Select Windows NT 4.0 Service Pack 4, and click Add/Remove. If this
option isn't available, run Spuninst.exe from the \%systemroot%$NtServicePackUninstall$\spuninst\ folder.

NOTE: If you install any applications or services that require SP4 or
have bug fixes contained in SP4, uninstalling SP4 could adversely affect
those applications.

If you want to uninstall SP4, the drive letter for the boot drive must
be the same as when you installed SP4. If you change the drive letter
for the boot drive, you can't uninstall SP4.

To uninstall Service Pack 2 and Service Pack 3, you had to run
Update.exe and then select "Uninstall a previously installed Service
Pack." This returned your system to its previous state. After your
system restarted, the Update.exe program replaced the files updated by
the Service Pack with most of the files from the previous installation
and returned most of your registry settings to what they were before
that Service Pack was installed.

NOTE: If you uninstall SP4 on a system that previously had Service
Pack 3 (without Internet Explorer 4.0) installed on it, cryptography
won't work correctly after the uninstall completes. To work around
this issue, reinstall Service Pack 3 after you have uninstalled SP4.

Uninstalling SP4 won't uninstall new versions of CryptoAPI and SChannel.

NOTE: If you plan to install a previous Service Pack after uninstalling
SP4, take note of the following important precaution. SP4 modifies the
Security Account Manager (SAM) database and the Security database such
that older versions of the Samsrv.dll, Samlib.dll, Lsasrv.dll,
Services.exe, Msv1_0.dll and Winlogon.exe files no longer recognize the
database structure. Therefore, the uninstall process doesn't restore
these files when uninstalling SP4. If you install a prior Service Pack
(for example, Service Pack 3) after uninstalling SP4, click "No" on the
"Confirm File Replace" dialog boxes that ask if you want to overwrite
Samsrv.dll and Winlogon.exe. If you overwrite the newer files with these
older versions, you'll be unable to log on to the system.

NOTE: If you're reinstalling SP4 after installing new software or
hardware, you must choose to create a new Uninstall folder. To retain
your ability to back out to a bootable configuration, copy the current
Uninstall folder to a safe location before running the SP4 installation
program.

--------------------------------------------------
2.4  Year 2000 Service Pack Installation
--------------------------------------------------
Windows NT Service Pack 4 contains fixes for known Year 2000 issues
in the Windows NT 4.0 operating system.

>>>To install the Year 2000 Service Pack from compact disc

Installing the Service Pack using Update.exe will update all necessary
files on your Windows NT 4.0 installation. It will also detect and
inform you if any additional Microsoft components that require updating
to resolve known Year 2000 issues in the Windows NT 4.0 operating system.
Follow the procedure below to update your computer to resolve known
Year 2000 issues.

Run the Y2ksetup.exe program located in the \I386\Update (for x86-based
computers) or \Alpha\Update (for Alpha-based computers) folders on the
Service Pack 4 compact disc. This program automatically updates
operating system components as detected to resolve known Year 2000 issues.

Note that this installation will require the system to be restarted one
or more times. There is no uninstall option available for Y2ksetup.exe.

>>>To install the Year 2000 Service Pack via the Web or FTP

Install the base Service Pack from one of the locations
below to your computer:

     http://support.microsoft.com/support/ntserver/content/servicepacks/
     http://support.microsoft.com/support/downloads/

The download program will automatically detect which files need to be
updated.  Once prompted with the File Download dialog, select "Run this
program from its current location" to perform a patched installation.
This will also detect and inform you if any additional Microsoft
components require updating to resolve known Year 2000 issues on your
Windows NT 4.0 operating system. Follow the procedure below to resolve
known Year 2000 issues.

Download the Year 2000 Service Pack (y2ksp4i.exe or y2ksp4a.exe)
from one of the locations below to your computer:

     ftp://ftp.microsoft.com/bussys/winnt/winnt-public/fixes/
     http://support.microsoft.com/support/ntserver/content/servicepacks/
     http://support.microsoft.com/support/downloads/

Run the self-extracting executable to expand the package. Run
Y2ksetup.exe from  \I386\Update (for x86-based computers) or
\Alpha\Update (for Alpha-based computers) folder at the target
location. This program automatically updates operating system
components as detected to resolve known Year 2000 issues.

Note that this installation will require the system to be restarted
one or more times. There is no uninstall option available for
Y2ksetup.exe.

>>>If you need to reinstall this Service Pack, run Update.exe
from the \I386\Update or \Alpha\Update folders. It isn't necessary
to uninstall the Service Pack previous to running Update.exe more
than once on the same system. Use \I386\Update\Y2ksetup.exe or
\Alpha\Update\Y2ksetup.exe to resolve known Year 2000 issues in
the Windows NT 4.0 operating system.

There are installation switches that can be used with Y2ksetup.exe.
The following switches are available:
Y2KSETUP \[-q\] \[-d\]
-q silent mode installation
-d display only (does not install, only displays those operating
system components on the computer that contain known Year 2000
issues)

2.4.2 Site Server Express 3.0
There are known Year 2000 issues in the following components of Site
Server Express 2.0:
* Content Analyzer
* Usage Analyst

Installing Site Server Express 3.0 directly from the Web or from the CD
doesn’t remove these components from your computer. You must install
Y2ksetup.exe to remove these components from your computer and install
Site Server Express 3.0, which contains an update for:
* Usage Analyst
* Posting Acceptor

An updated version of the Content Analyzer will be available for
download from the Windows NT Service Pack 4.0 Web site.

Known Site Server Express 3.0 setup issues:
* When Y2KSetup installs Internet Explorer 4.01 SP1 and Site Server
  Express 3.0, two   IIS virtual roots that are required by Posting
  Acceptor aren't created. It's recommendeded that you reinstall
  Site Server Express 3.0 by running Ssx.exe from the \Ssx folder
  on the CD.

2.4.3 FrontPage Server Extension Year 2000 Issues
Releases of FrontPage 1.0, FrontPage 1.1 and FrontPage 97 are not Year
2000 compliant. Releases of FrontPage 98 resolve known Year 2000 issues.
If you have NTOP installed, you will have FrontPage 98 Server Extensions.
It's possible to have two or more versions of the FrontPage Server
Extenders on your computer at one time. The installation of a version
that isn't Year 2000 ready doesn't mean that you are actively running
that version.

>>>To determine which version of the FrontPage Server Extenders are
actively in use on computers with FrontPage 98 or earlier
*  Run the FrontPage Server Administrator (Fpsrvwin.exe).
*  Click on each of the Web servers or virtual servers listed in the
   box in the upper left area, which have been configured with the
   FrontPage Server Extenders.
*  The version number of the FrontPage Server Extenders is displayed
   to the right of the list. Version numbers where the first digit is
   3 or greater resolve known Year 2000 issues (e.g. 3.0.2.1706).

If the first digit of the version number is a 1 or 2, then you should
download and install the latest version of the FrontPage Server Extenders.
Refer to http://www.microsoft.com/frontpage/ for details on the latest
available version is and how to download.

2.4.4 IBM PS/1 ValuePoint
There are known Year 2000 issues for Windows NT version 4.0 on 2.4.4
IBM PS/1 ValuePoint computers. To fix these known issues, you must
upgrade Ntdetect.com in order to resolve known Year 2000 issues in
older versions.

From the \Ps1 folder on the CD, copy Ntdetect.com to the root of your
primary boot partition on your computer. You do not need to reboot.

For more information, go to the Knowledge Base at http://support.
microsoft.com/support/ and search for KB article Q194301.

For Year 2000 issues regarding Microsoft products or definitions
regarding Year 2000 compliance, as used herein, see our Web site at
http://www.microsoft.com/year2000.


================
3.0  USER NOTES
================
This section covers information that is specific to this Service
Pack release.

--------------------------
3.1  Emergency Repair Disk
--------------------------
If you use the Windows NT Emergency Repair Disk to repair your Windows
NT system, which requires you to supply the original Windows NT media at
some time after you install Service Pack 4, you'll need to reinstall
SP4 after the repair is completed. This is because the Emergency Repair
Disk repairs your system by restoring your original Windows NT 4.0
system files. After the repair is completed, follow the Installation
Instructions (Section 2.0) to reinstall SP4. For more information on
using the Windows NT Emergency Repair Disk utility, go to the Knowledge
Base at http://support.microsoft.com/support/ and search for KB article
Q146887.

NOTE: To use the Emergency Repair Disk utility, you must have the
updated version of Setupdd.sys. The updated version is contained in
SP4. To update your version of Setupdd.sys, copy Setupdd.sys from the
Service Pack to your Windows NT 4.0 Setup Disk 2 from the original product
media. This will replace the older version of Setupdd.sys with the
updated version. For more information, consult the Knowledge Base at
http://support.microsoft.com/support/ and search for KB article Q158423.

----------------------------------------
3.2  Adding New Components to the System
----------------------------------------
If you change or add new software or hardware components to your system
after you install SP4, you'll need to install the SP4 again. This is
because the files included on the original Windows NT 4.0 media may
not be the same as the files on the Service Pack CD. You can't install
new components, such as a new keyboard or printer driver, directly from
the Service Pack media. You must install new components from the original
product media and then reinstall the Service Pack.

For example, if you install the Simple Network Management Protocol
(SNMP) service after installing SP4, you'll need to reinstall the
Service Pack. If you fail to do so, you'll receive the error message
"Entrypoint SnmpSvcGetEnterpriseOID could not be located in Snmpapi.dll."
This is because some of the files in the SNMP service have been updated
in the SP4 and you have a version mismatch. Reinstalling the Service
Pack fixes the problem by copying the newer versions of the files to
your system.

NOTE: SNMP security provides the ability to set a permission level on
the SNMP agent computer. The permission level determines how the SNMP
agent computer will process requests from an SNMP community.

----------------------------------------
3.3  Installing Symbol Files from the CD
----------------------------------------
Each program file in Windows NT has a corresponding symbol file that
is used to find the cause of kernel STOP errors. The symbols for SP4
files are compressed in self-extracting executables named Sp4symi.exe
and Sp4syma.exe, for Intel and Alpha respectively. To install the symbol
files corresponding to the new binaries in SP4, run the executable and
when prompted, specify the path to the location of the previous version's
symbols (for example, c:\winnt\symbols\). This copies the SP4 .dbg files
over the existing versions of these files.

For more information about debugging in Windows NT, see Chapter 39,
"Windows NT Debugger," in the Microsoft Windows NT 4.0 Workstation
Resource Kit.

-----------------------------------------------
3.4  Hardware Compatibility with Windows NT 4.0
-----------------------------------------------
3.4.1 Video Drivers
Due to incompatibilities between the ATIRage drivers and Service Pack
setup, the files Ati.sys and Ati.dll haven't been included with SP4.
Any ATI drivers currently installed on your system will still function
normally.

If you install SP4 over SP3 on a computer that has a Number Nine
Visual Technologies Imagine 2 video card and drivers installed, you
may experience some loss of functionality in the video driver, such as
loss of any resolutions requiring 256 or more colors. If you uninstall
SP4 and revert to SP3, the Imagine 2 card may be unable to display 256
colors or higher. There is no known resolution for either of these two
issues because reinstalling the Imagine 2 video drivers doesn’t restore
the lost functionality. Number Nine is aware of this issue and is
working on a fix.

3.4.2 Dell Latitude Systems
If you're running Windows NT 4.0 on a Dell Latitude portable computer,
your Dell-supplied Softex Advanced Power Management and PC Card
Controller services (versions 2.0 and above) will continue to function
after you install SP4. Softex version 1.0 will stop functioning after
SP4 installation. To update your system for SP4, install version 2.19
or later of the Softex utilities, available from http://support.dell.com/
filelib/. Your computer will become unusable if you reinstall any version
of Softex prior to 2.19 after installing SP4.

3.4.3 Softex/Phoenix Utilities
If you're using any of the following Softex Incorporated or Phoenix
Technologies utilities, you may encounter problems running SP4:
*  Softex PC Card Controller, or Phoenix CardExecutive for Windows NT
*  Softex Power Management Controller, or Phoenix APM for Windows NT
*  Softex Docking Controller, or Phoenix NoteDock for Windows NT
*  Softex DeskPower Controller, or Phoenix DeskAPM for Windows NT

Follow these guidelines:
1) Obtain the version number of the utilities you're using.

2) You must be running version 2.19 or later of the Softex or Phoenix
   utilities to avoid problems with SP4. Don’t install or reinstall
   any version of Softex or Phoenix utilities earlier than 2.19 on
   your system, or your system might not boot. For more information,
   visit the Softex Incorporated Web site at http://www.softexinc.com
   or Phoenix Technologies at http://www.phoenix.com.

3.4.4 255 SCSI Logical Unit Support
Windows NT 4.0 detects only the first 8 logical units on a SCSI device.
To work around this limitation, install SP4 and add the following key
in the registry:

\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\\[Driver Service Key\]
\Parameters\Device\[N\]
    LargeLuns: REG_DWORD: 0x1

where \[Driver Service Key\] is your SCSI driver name and \[N\] is the SCSI
bus number.

3.4.5 IBM PS/1 ValuePoint
There are known Year 2000 issues for Windows NT version 4.0 on this
computer. It's necessary to upgrade Ntdetect.com in order to resolve
known Year 2000 issues in older versions.

From the \Ps1 folder on the CD, copy Ntdetect.com to the root of your
primary boot partition on your computer. You do not need to reboot.

For more information, go to the Knowledge Base at http://support.
microsoft.com/support/ and search for KB article Q194301.

3.4.6 SystemSoft Card Wizard
If your computer contains SystemSoft Card Wizard version 3.x and you
have installed SP4, you may have lost socket services functionality.
To workaround this issue reinstall SystemSoft Card Wizard version 3.x
or higher after installing Service Pack 4. Or you can copy Pcmcia.sys
from the Service Pack 4 Uninstall folder, $ntservicepacekuninstall$,
to the \%systemroot%\System32\Drivers folder on your computer. Reboot
the computer.

------------------------
3.5  DIGITAL Alpha Notes
------------------------
3.5.1 Using Remotely Possible 32 with Matrox Millennium Display Adapter
If you use Remotely Possible 32 on an Alpha with a Matrox Millennium
display adapter, don't use the Matrox drivers. Otherwise, your computer
bluescreens after rebooting. You must use VGA-compatible display adapter
drivers to use Remotely Possible 32.

3.5.2 Lotus Notes 4.5
If you want to use Lotus Notes and Internet Explorer 4.01 on an Alpha
computer that runs Windows NT 4.0, you must follow this sequence when
installing SP4:
1. If you have Internet Explorer 4.01 on your computer, uninstall it.
2. Install SP4.
3. Install (or reinstall) Lotus Notes.
4. Install Internet Explorer 4.01 from the SP4 CD.
   This problem will be fixed in a future release.

3.5.3 Alpha Fixes in SP4
These notes describe problems on Alpha systems that have been resolved
since the Windows NT 4.0 Service Pack 3 release.

NOTE: Windows NT 4.0 SP4 ships with HAL Revision D. This revision is
also currently available from Compaq.

  3.5.3.1 System Hangs on Alpha Systems with Only One Processor
  Physically Present
  The following Alpha systems, with only one processor physically
  present, no longer hang when booted:
    AlphaServer 4x00
    AlphaServer 1200
    AlphaStation 1200
    DIGITAL Server 5000
    DIGITAL Server 7000

  3.5.3.2 Clock Interrupt Period Changed from 7.5 ms to 10 ms
  In Windows NT 4.0 SP4, the effective clock interrupt period on the
  following systems was changed from 7.5 ms to 10 ms:
    AlphaServer 4x00
    AlphaServer 1200
    AlphaStation 1200
    DIGITAL Server 5000
    DIGITAL Server 7000

  This change will provide parity with Intel systems and alleviate
  performance anomalies caused by assumptions of 10 ms for the
  resolution for timers (which is equal to the clock interrupt period).

  3.5.3.3 Pyxis Error Registers
  HAL Revision D, which ships with Windows NT 4.0 SP4, supports updated
  Pyxis error registers, which provide more meaningful information during
  hardware crashes.

  3.5.3.4 Peer-to-Peer DMA Transfers
  This Service Pack, together with the current AlphaBIOS firmware, now
  allows peer-to-peer DMA transfers.

  3.5.3.5 PCI Devices with 256 MB of Memory or Greater
  The following Alpha platforms now support PCI devices with 256 MB of
  memory or greater for memory-mapped I/O:
    AlphaServer 1000 5/xxx
    AlphaServer 1000A 5/xxx
    AlphaServer 800 or Digital Server 3000
    AlphaStation 600
    AlphaStation 500
    Alpha XL 3xx

  3.5.3.6 Alpha Machines Sometimes Hang When Rebooting
  The following systems no longer hang during an attempted reboot:
    AlphaServer 4x00
    AlphaServer 1200
    AlphaStation 1200
    DIGITAL Server 5000
    DIGITAL Server 7000

  3.5.3.7 I/O Performance Degradation or a Hung Machine Under Heavy I/O
  Loads On Alpha machines with heavy I/O loads, certain device drivers
  consumed too many DMA map registers. This sometimes caused poor I/O
  performance or a hung machine. SP4 allows a greater number of DMA map
  registers.

  3.5.3.8 Crashes on Alpha systems with STOP Code 0x0A
  Minor "correctable" hardware errors no longer generate crashes with
  STOP code 0x0A on following machines:
    AlphaServer 1000 5/xxx
    AlphaServer 1000A 5/xxx
    AlphaServer 800 or Digital Server 3000
    AlphaStation 600
    AlphaStation 500
    AlphaStation 600A
    Alpha XL 3xx

  3.5.4 DIGITAL Ultimate Workstation 533
  SP4 won't update the Hal.dll file on the system because Hal.dll is
  marked as an OEM file.  To work around this, you must manually copy
  Halrawmp.dll from SP4 to your system. To do this, first locate the
  Hal.dll file on the system (in the OSLOADER subfolder), and then copy
  Halrawmp.dll from SP4 to this folder, renaming it Hal.dll.

  3.5.5 Installation Fails on Alpha Machines with Windows NT Option Pack
  1.0 Installed
  Security Configuration Manager (SCM) doesn't install on Alpha machines
  that have the Windows NT Option Pack 1.0 for Alpha installed. This is
  because the Mfc42u.dll file installed by the Windows NT Option Pack
  isn't compatible with SCM.

  To work around this, replace Mfc42u.dll installed by Windows NT Option
  Pack 1.0 for Alpha with Mfc42u.dll from the Windows NT4.0 CD or from
  Visual C 6.0. This may cause problems with the applications in the
  Windows NT Option Pack 1.0 for Alpha. This will be fixed in the next
  release of Windows NT.

3.5.4 Microsoft Transaction Server and Distributed Transaction Coordinator
The file TestOracleXAConfig.exe isn't automatically installed on DEC
Alpha-based computers. If you are installing Windows NT 4.0 SP4 on an
Alpha-based computer and will be using Microsoft Transaction Server (MTS)
or the Distributed Transaction Coordinator (DTC) with an Oracle or XA-
compliant database, you must manually copy this file from the CD-ROM to
the %sysroot%\system32 folder on your hard drive. The symbol %sysroot%
represents the installation folder for Windows NT. For example, if your
installation folder is C:\Winnt, you would copy it to C:\Winnt\Wystem32.

TestOracleXAConfig.exe is located in the \Alpha folder on the Windows
NT 4.0 SP4 CD-ROM.

If you are installing Windows NT 4.0 SP4 on an Intel-based computer,
TestOracleXAConfig.exe is automatically installed during Setup.  

---------------------------------------------------------------
3.6  Running Windows NT Administrative Tools from Remote Server
---------------------------------------------------------------
In order to run administrative tools from a remote server, you must
upgrade the remote server to Service Pack 4. If you attempt to run
administrative tools from a remote machine that hasn't also been
upgraded to Service Pack 4, they will fail to load or won't function
properly.

-------------------------------
3.7  CryptoAPI and Authenticode
-------------------------------
The Authenticode environment won't be set up correctly for existing
user accounts on upgrades from Windows NT 4.0 systems running Internet
Explorer 3.02. This doesn't affect new user accounts created on the
system. Also, upgrades from Windows NT 4.0 systems with Internet Explorer
4.0 or later aren't affected.

Each user needs to enter the following command line in a command prompt
window before they use Authenticode:

setreg 1 false 2 true 3 false 4 false 5 true 6 false 7 true 8 false 9
  false 10 false

Setreg.exe isn't part of SP4; you can download it as part of the
CryptoAPI tools. You can install the latest CryptoAPI tools (Internet
Explorer 4.0 or later) from the Platform SDK on MSDN.

The CryptoAPI tools (also known as Authenticode Signing tools) that
were released for Internet Explorer 3.02 are no longer supported.
Tools released for Internet Explorer 4.0 will continue to work on
Service Pack 4.

If you install SP4 on a system with Internet Explorer 4.0 or later and
then uninstall Internet Explorer, newer CryptoAPI components will be
partially uninstalled. This problem doesn't affect the system if
Internet Explorer 4.0 was installed after SP4. Reinstall SP4 after
uninstalling Internet Explorer for full functionality.

To ensure proper CryptoAPI functionality, it’s recommended that you
install Internet Explorer 3.02 or later before you install SP4. The
following is a list of known problems when Internet Explorer 3.02 or
later is installed after SP4:
* Certain CryptoAP2 networking functions have a dependency on Wininet.dll
and may fail if Wininet.dll isn't on the system. To work around this,
install Internet Explorer 3.02 or later before installing SP4.
* Certificate revocation checking fails if you install Internet Explorer
4.0 after you install SP4. To fix this, reinstall SP4 after installing
Internet Explorer 4.0. This will be fixed in a future release of Internet
Explorer.
* Certain CryptoAPI-related file extensions (.Cer, .Crt, and .Der) aren't
registered correctly when Internet Explorer 4.0 is installed after SP4. To
restore the file extension registration, run the following command line:

Regsvr32.exe cryptext.dll

This will be fixed in a future release of Internet Explorer.

-----------------------------------
3.8  Uninstalling Internet Explorer
-----------------------------------
On a system that had Internet Explorer 4.0 or later installed and then
had SP4 applied, uninstalling Internet Explorer will partially uninstall
newer CryptoAPI components. Reinstall SP4 after uninstalling Internet
Explorer. This problem doesn't affect the system if Internet Explorer
was installed after SP4.

-----------------------------
3.9  Certificate Server Notes
-----------------------------
3.9.1 Known Problems and Limitations:
1. Be sure to consult the release notes for the Certificate Server
   version 1.0 as shipped with the Windows NT Option Pack. Also
   consult the QFE update release at ftp://ftp.microsoft.com/bussys/
   iis/iis-public/fixes/usa/certserv.

2. Do not perform an initial installation of Certificate Server on
   February 29th of a leap year. The validity period for the server
   will be set incorrectly. To work around this, set the machine
   time to the day before (February 28th), perform the installation,
   and then reset the machine time back to February 29th. There
   is no problem issuing certificates on February 29th, once the
   certificate server is successfully installed (as noted above).

3. If you install Certificate Server on top of SP4, you may receive
   a "Some system services could not start" error message upon
   system startup. Click OK to continue, and check the Event Viewer
   log for the specific error.

   Event ID: 7000
   Source: Service Control Manager
   Description: The Certificate Authority service failed to start due
   to the following error: The service did not respond to the start or
   control reque</messagecleanupinterval></winntsystemroot></b>