A. Netdiag.exe is new to Windows 2000 but is not installed as part of a core installation, instead it is part of the Windows 2000 support tools so to install perform the following:

  1. Insert your Windows 2000 CD
  2. Move to the Support\Tools directory
  3. Run setup.exe

A new program files\support tools folder will be created and populated with the utilities. It is adding to the path variable but any open cmd sessions will need to be closed and restarted to load the new path environment string.

What does it do? Its similar to Network Monitor but not quite as good but run with no options it will run tests on the adapters including domain membership, connection tests:

C:\&gt;netdiag<br><br>
....................................<br><br>
    Computer Name: CYPHER<br>
    DNS Host Name: cypher.savilltech.com<br>
    System info : Windows 2000 Professional (Build 2195)<br>
    Processor : x86 Family 6 Model 5 Stepping 2, GenuineIntel<br>
    List of installed hotfixes :<br>
        Q147222<br>
        Q253562<br>
        Q253934<br><br><br>
Netcard queries test . . . . . . . : Passed<br><br><br><br>
Per interface results:<br><br>
    Adapter : Local Area Connection<br><br>
        Netcard queries test . . . : Passed<br><br>
        Host Name. . . . . . . . . : cypher.savilltech.com<br>
        IP Address . . . . . . . . : 200.200.200.210<br>
        Subnet Mask. . . . . . . . : 255.255.255.0<br>
        Default Gateway. . . . . . : 200.200.200.1<br>
        Dns Servers. . . . . . . . : 200.200.200.1<br>
                                     200.200.200.2<br><br><br>
        AutoConfiguration results. . . . . . : Passed<br><br>
        Default gateway test . . . : Passed<br><br>
        NetBT name test. . . . . . : Passed<br>
            No remote names have been found.<br><br>
        WINS service test. . . . . : Skipped<br>
            There are no WINS servers configured for this interface.<br><br><br>
Global results:<br><br><br>
Domain membership test . . . . . . : Passed<br><br><br>
NetBT transports test. . . . . . . : Passed<br>
    List of NetBt transports currently configured:<br>
        NetBT_Tcpip_\{9C65E63C-5242-45F8-9685-4A6649E92F35\}<br>
    1 NetBt transport currently configured.<br><br><br>
Autonet address test . . . . . . . : Passed<br><br><br>
IP loopback ping test. . . . . . . : Passed<br><br><br>
Default gateway test . . . . . . . : Passed<br><br><br>
NetBT name test. . . . . . . . . . : Passed<br><br><br>
Winsock test . . . . . . . . . . . : Passed<br><br><br>
DNS test . . . . . . . . . . . . . : Passed<br><br><br>
Redir and Browser test . . . . . . : Passed<br>
    List of NetBt transports currently bound to the Redir<br>
        NetBT_Tcpip_\{9C65E63C-5242-45F8-9685-4A6649E92F35\}<br>
    The redir is bound to 1 NetBt transport.<br><br>
    List of NetBt transports currently bound to the browser<br>
        NetBT_Tcpip_\{9C65E63C-5242-45F8-9685-4A6649E92F35\}<br>
    The browser is bound to 1 NetBt transport.<br><br><br>
DC discovery test. . . . . . . . . : Passed<br><br><br>
DC list test . . . . . . . . . . . : Passed<br><br><br>
Trust relationship test. . . . . . : Passed<br>
    Secure channel for domain 'SAVILLTECH' is to '\\MORPHEUS'.<br><br><br>
Kerberos test. . . . . . . . . . . : Skipped<br><br><br>
LDAP test. . . . . . . . . . . . . : Passed<br>
    \[WARNING\] You are logged on as a local user. (CYPHER\Administrator)<br>
        Cannot test NTLM Authentication to 'morpheus.savilltech.com'.<br><br><br>
Bindings test. . . . . . . . . . . : Passed<br><br><br>
WAN configuration test . . . . . . : Skipped<br>
    No active remote access connections.<br><br><br>
Modem diagnostics test . . . . . . : Passed<br><br>
IP Security test . . . . . . . . . : Passed<br>
    Directory IPSec Policy Active: 'Server (Request Security)'<br><br><br>
The command completed successfully

If you run netdiag /? you will see you can run specific tests which may be more pertinent to your problem.