This article was previously published under Q276538
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When you are running Network Load Balancing (NLB) on a Windows 2000-based server, system responsiveness may appear sluggish over time, and clients may report a gradual decrease in system performance. You may also receive "Out of Virtual Memory" error messages, and the computer may stop responding (hang) when the memory is completely exhausted.
If you track the amount of private bytes for Winmgmt.exe, you may note that over time it increases without ever decreasing. You can view this behavior by using the Windows 2000 Performance snap-in by selecting the following counter to monitor:
Object: Process Instance: Winmgmt Counter: Private Bytes
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 theMicrosoft Knowledge Base:
260910 How to Obtain the Latest Windows 2000 Service Pack
Microsoft has confirmed that this is a problem in Microsoft Windows 2000.
This problem was first corrected in Windows 2000 Service Pack 2.