Microsoft KB Archive/148749

= Performance Monitor Error after Installing NT 3.51 SP4 =

Article ID: 148749

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Workstation 3.51
 * Microsoft Windows NT Server 3.51

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This article was previously published under Q148749





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.

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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

Additional query words: prodnt sp4 service pack

Keywords: KB148749

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