Performance Monitor Error after Installing NT 3.51 SP4

 Last reviewed: September 23, 1996
Article ID: Q148749
The information in this article applies to:
  • Microsoft Windows NT Workstation version 3.51
  • Microsoft Windows NT Server version 3.51

SYMPTOMS

After you upgrade to Windows NT 3.51 Service Pack 4 and run Performance Monitor, the following event is logged in Event Viewer: 

   Event ID: 1008
   Source: Perflib
   Description: The Open Procedure for service "NwlnkSpx" in DLL
   "perfctrs.dll" failed. Performance data for this service will
   not be available. Status code returned is DWORD 0.

CAUSE

When the NWLINK IPX/SPX protocol is installed, an Nwlnkspx.sys key gets created in the registry, and it has a Performance key under it. When Performance Monitor loads, it calls the open SPX performance procedure for Nwlnkspx.sys. The problem is that Nwlnkspx.sys is not started by default and the error above is logged. Nwlnkspx.sys gets loaded when an SPX-based application is started or NET START NWLNKSPX is issued from the command prompt. NWLNKSPX counters do not appear in Performance Monitor until it has started.

Changes to Service Pack 4 appear to cause this error. They do not adversely affect the operating system in any way.

WORKAROUND

To monitor NWLINK IPX/SPX statistics in Windows NT 3.51 Service Pack 4, type the following at a command prompt: 

   NET START NWLNKSPX
NOTE: This loads the NWLNKSPX.SYS file, which is necessary to monitor the NWLINK IPX/SPX statistics. 

   - or -
Go into Control Panel, Devices and set all three of the NWLink devices to startup automatically. This will prevent the errors from being logged as the system is first coming up after a reboot.

STATUS

Microsoft has confirmed this to be a problem in Windows NT version 3.51 Service Pack 4. This problem was corrected in the latest Windows NT 3.51 U.S. Service Pack. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces): 

   S E R V P A C K

KBCategory: kbnetwork
KBSubcategory: ntsetup ntutil
Additional reference words: 3.51 prodnt sp4 service pack

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Last reviewed: September 23, 1996
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