Microsoft KB Archive/175648: Difference between revisions

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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 &quot;Restoring the Registry&quot; online Help topic in Regedit.exe or the &quot;Restoring a Registry Key&quot; online Help topic in Regedt32.exe.
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.


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<pre class="fixed_text">  Event Id 20120 - &quot;Could Not Open IPX SAP Socket for Exclusive Access&quot;.
<pre class="fixed_text">  Event Id 20120 - "Could Not Open IPX SAP Socket for Exclusive Access".
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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.<br />
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.<br />
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For information about how to edit the registry, view the &quot;Changing Keys And Values&quot; online Help topic in Registry Editor (Regedit.exe) or the &quot;Add and Delete Information in the Registry&quot; and &quot;Edit Registry Data&quot; online Help topics in Regedt32.exe. Note that you should back up the registry before you edit it.<br />
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.<br />
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To make sure there is not some conflict between Nwsap.dll and Ipxsap.dll, perform the following steps:<br />
To make sure there is not some conflict between Nwsap.dll and Ipxsap.dll, perform the following steps:<br />

Latest revision as of 10:09, 21 July 2020

Knowledge Base


Event ID 20120: Could Not Open IPX SAP Socket for Exclusive Access

Article ID: 175648

Article Last Modified on 10/31/2006



APPLIES TO

  • Microsoft Windows NT Server 4.0 Standard Edition
  • 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:

  1. Back up and delete Nwsap.dll from %windir%\system32.
  2. Make sure that HKLM\SYS\CCS\Services\NwSapAgent\ImagePath is pointing to Mprouter.exe.
  3. Make sure that Ipxsap.dll is present in the %windir%\system32 folder.


Keywords: kbarttypeinf kberrmsg kbinfo kbprb KB175648