PDH Gives Incorrect Results for Nonnumeric Counter Instances (311500)

The information in this article applies to:

Microsoft Platform Software Development Kit (SDK) 1.0, when used with:
- the operating system: Microsoft Windows NT 4.0

This article was previously published under Q311500

SYMPTOMS

When you are using the Performance Data Helper library DLL (Pdh.dll) under Windows NT 4.0, you may find that the total disk counter instance counter (_Total) is not the sum of the individual counter instances. This happens when you use a version of PDH.dll later than 5.0.

CAUSE

When nonnumeric counter instances (like _Total) are used, PDH queries the 0 instance of the counter.

RESOLUTION

To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

260910 How to Obtain the Latest Windows 2000 Service Pack

The English version of this fix should have the following file attributes or later:

   Date         Time   Version        Size     File name
   -----------------------------------------------------
   28-Oct-2001  15:31  5.0.2195.4561  152,848  Pdh.dll

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Windows 2000 Service Pack 3.

Modification Type:	Minor	Last Reviewed:	9/26/2005
Keywords:	kbHotfixServer kbQFE kbbug kbfix kbSysAdmin kbWin2000sp3fix KB311500