NWRDR May Send Excessive GetNearestServer Requests

 Last reviewed: January 30, 1998
Article ID: Q179190
The information in this article applies to:
  • Microsoft Windows NT Workstation version 4.0
  • Microsoft Windows NT Server version 4.0

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

The NetWare redirector component (Nwrdr.sys) of Client Services for NetWare (CSNW) and Gateway Services for NetWare (GSNW) may send additional GetNearestServer Service Advertising Protocol (SAP) requests even after receiving a response to its first request.

CAUSE

NWRDR was originally designed to send a minimum of four SAP requests even if it received a response to one of the previous requests.

RESOLUTION

To resolve this problem, obtain the following fix or wait for the next Windows NT 4.0 service pack.

This fix should have the following time stamp: 

   01/05/98  06:07p               152,720 Nwrdr.sys (Intel)
   01/05/98  06:04p               277,552 Nwrdr.sys (Alpha)
After the fix has been applied, there is a new registry parameter that will set the minimum number of SAP responses Windows NT must receive. This should be set to the number of servers that will be responding or set to four, whichever is less.

WARNING: Using Registry Editor incorrectly can cause serious problems that may require you to reinstall your operating system. 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.

  1. Start Registry Editor (Regedt32.exe).

  2. Go to the following key: 

          HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\NwRdr\Parameters

  3. From the Edit menu, click Add Value.

  4. Enter the following value: 

          Value:   MinimumSapResponses
      Type:    REG_DWORD
      Data:    1 to 4 (default is 4)

  5. Exit Registry Editor.

NOTE: This change to the Windows NT registry requires the computer to be restarted to take effect.

STATUS

Microsoft has confirmed this to be a problem in Windows NT version 4.0. A supported fix is now available, but has not been fully regression tested and should be applied only to systems experiencing this specific problem. Unless you are severely impacted by this specific problem, Microsoft recommends that you wait for the next Service Pack that contains this fix. Contact Microsoft Technical Support for more information. 

Keywords          : kbbug4.00 kbfix4.00 NTSrvWkst
Version           : WinNT:4.0
Platform          : winnt
Issue type        : kbbug
Solution Type     : kbfix

================================================================================

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.

Last reviewed: January 30, 1998
© 1998 Microsoft Corporation. All rights reserved. Terms of Use.