Event ID 20087 Appears When You Dial a RAS Server

• Microsoft Windows NT Server versions 3.5 and 3.51
• Microsoft Windows NT Workstation versions 3.5 and 3.51
• Microsoft Windows NT Server version 4.0
• Microsoft Windows NT Workstation version 4.0

SYMPTOMS

When you use NWLink and dial in from a Windows NT Remote Access Service (RAS) client to a Windows NT RAS server, the following system event may appear in the Event Viewer:

   Event ID: 20087
   Source: RemoteAccess
   Type: Error
   Description: The IPX network number for the LAN adapter with the MAC
   address <MAC address> on the local machine has not been configured
   or could not be auto-detected. The IPX Router will not work on this
   LAN segment.

CAUSE

This problem occurs when the network segment that the Windows NT RAS server is on does not have an IPX network number.

RESOLUTION

To correct this problem:

• Run Registry Editor to change NetworkNumber from 0 to a valid network number.

  -or-

• Install a NetWare server on the network segment that contains the RAS server, configure it with a unique network number, and then shutdown and restart the Windows NT RAS server.

WARNING: Using Registry Editor incorrectly can cause serious, system-wide problems that may require you to reinstall Windows NT to correct them. Microsoft cannot guarantee that any problems resulting from the use of Registry Editor can be solved. Use this tool at your own risk.

1. Run Registry Editor (REGEDT32.EXE) on the RAS server.

2. From the HKEY_LOCAL_MACHINE subtree, go to the following subkey:

         \SYSTEM\CurrentControlSet\Services\NwLnkIpx
           \NetConfig\<Network or RAS adapter>
   
   

3. Highlight NetworkNumber.

4. From the Edit menu, choose Multi String.

5. Change the value from 0 to a valid network number.

6. Choose OK and quit the Registry Editor.

7. Shutdown and restart Windows NT.