After you upgrade to Windows 2000 Service Pack 4 (SP4), when you use the Event Viewer to inspect the System log, you see the following errors:

Source: RemoteAccess                              Category: None                              Event ID: 20071                              Date: date                              Time: time                              Type: Error                              User: N/A                              Computer: <ComputerName>;                              Description: The Point to Point Protocol module C:\WINNT\System32\rastls.dll                                           returned an error while initializing.                                           The network request is not supported.                               Source: RemoteAccess                              Category: None                              Event ID: 20151                              Date: date                              Time: time                              Type: Error                              User: N/A                              Computer: <ComputerName>;                              Description: The Control Protocol EAP in the Point to Point Protocol module                                            C:\WINNT\System32\rasppp.dll returned an error while initializing.                                           The network request is not supported.                               Source: Rasman                              Category: None                              Event ID: 20063                              Date: date                              Time: time                              Type: Error                              User: N/A                              Computer: <ComputerName>;                              Description: Remote Access Connection Manager failed to start because the                                           Point to Point Protocol failed to initialize.                                            The network request is not supported.                               Source: Service Control Manager                              Category: None                              Event ID: 7023                              Date: date                              Time: time                              Type: Error                              User: N/A                              Computer: <ComputerName>;                              Description: The Remote Access Connection Manager service terminated with the following error:                                           The network request is not supported.                              Your Application event log contains:                              Source: rasctrs                              Category: None                              Event ID: 2001                              Date: date                              Time: time                              Type: Error                              User: N/A                              Computer: <ComputerName>;                              Description: The description for Event ID (2001) in Source (rasctrs) cannot be found.                                            The local computer may not have the necessary registry information or message DLL                                           files to display messages from a remote computer. The following information is                                           part of the event: The event log file is corrupt.
NOTE: If you attempt to create a new dial-up connection, some of the options are dimmed.

If you upgraded from SP3 and you had NOT previously configured the Routing and Remote Access service, or a remote access dial-up connection, some of the remote access-related binary files are immediately replaced. When the service pack Setup programs installs support for the 802.1x and initializes these new binaries, they conflict with the old binaries that had never been initialized.

To workaround this issue, shutdown and restart your computer to bring the remote access binary files up to date.