Event ID 20120: Could Not Open IPX SAP Socket for Exclusive Access (175648)
The information in this article applies to:
- Microsoft Windows NT Server 4.0
- Microsoft Routing and Remote Access Service Update for Windows NT Server 4.0
This article was previously published under Q175648
IMPORTANT: This article contains information about editing the registry.
Before you edit the registry, make sure you understand how to restore it if
a problem occurs. For information on how to do this, view the "Restoring
the Registry" online Help topic in Regedit.exe or the "Restoring a Registry
Key" online Help topic in Regedt32.exe.
SYMPTOMS
After installing Routing and Remote Access Service on a computer that
previously had RAS installed, you may receive the following message in
Event Viewer:
Event Id 20120 - "Could Not Open IPX SAP Socket for Exclusive Access".
CAUSE
This error is caused by an old Nwsap.dll being read instead of the updated
RRAS Ipxsap.dll.
RESOLUTION
WARNING: Using Registry Editor incorrectly can cause serious problems that
may require you to reinstall Windows. Microsoft cannot guarantee that
problems resulting from the incorrect use of Registry Editor can be solved.
Use Registry Editor at your own risk.
For information about how to edit the registry, view the "Changing Keys And
Values" online Help topic in Registry Editor (Regedit.exe) or the "Add and
Delete Information in the Registry" and "Edit Registry Data" online Help
topics in Regedt32.exe. Note that you should back up the registry before
you edit it.
To make sure there is not some conflict between Nwsap.dll and Ipxsap.dll,
perform the following steps:
- Back up and delete Nwsap.dll from %windir%\system32.
- Make sure that HKLM\SYS\CCS\Services\NwSapAgent\ImagePath is pointing to
Mprouter.exe.
- Make sure that Ipxsap.dll is present in the %windir%\system32 folder.
| Modification Type: | Major | Last Reviewed: | 8/10/2001 |
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| Keywords: | kbArtTypeINF kberrmsg kbinfo kbprb KB175648 |
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