Microsoft KB Archive/819716

= TCP/IP Performance Counters May Not Appear in Performance Monitor =

Article ID: 819716

Article Last Modified on 10/26/2006

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APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Professional Edition
 * Microsoft Windows 2000 Advanced Server

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SYMPTOMS
When you use Performance Monitor to view TCP/IP performance counters, the counters may not appear.

The Event log may contain an event that is similar to the following: Event Type: Error

Event Source: Perflib

Event Category: None

Event ID: 1010

Date: 2/28/2003

Time: 3:44:25 PM

User: N/A

Computer:

Description: The Collect Procedure for the &quot;Tcpip&quot; service in DLL &quot;C:\WINNT\system32\Perfctrs.dll&quot; generated an exception or returned an invalid status. Performance data returned by counter DLL will be not be returned in Perf Data Block. Exception or status code returned is data DWORD 0. Data: 0000: 05 00 00 c0 ...À



CAUSE
This behavior may occur if you use certain types of network adapters. The network adapter driver may return description strings to the CollectTcpIpPerformanceData function that do not contain null terminators. The sprintf function copies the description strings to a local variable. However, the sprintf function does not check to make sure that the strings are not too large for the local variable to hold. As a result, a buffer overflow may occur. Because the buffer is stored on the stack, the stack becomes corrupted. This corruption causes an access violation.



Hotfix Information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites
You must have Windows 2000 Service Pack 3 (SP3) installed.

Hotfix Replacement Information
This hotfix does not replace any other hotfixes.

File Information
The English version of this fix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.   Date         Time   Version            Size    File name --  30-Apr-2003  22:17  5.0.2195.6742      42,256  Perfctrs.dll



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.



MORE INFORMATION
For additional information about how hotfix packages are named, click the following article number to view the article in the Microsoft Knowledge Base:

816915 New Naming Schema for Microsoft Windows Hotfix Packages

Keywords: kbhotfixserver kbqfe kbbug kbfix kbqfe kbwin2000presp5fix KB819716

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