WOW Leak Launching Many Instances of a 16-Bit Application

This article was previously published under Q186495
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SYMPTOMS
In cases where 16-bit applications are launched repeatedly in separateVirtual DOS Machines (VDMs), system resources may be depleted because of aWOW memory leak. Symptoms of the leak condition will be popup errorsmessages indicating "low virtual memory" and potential system crashes ifmemory resources are severely depleted over a long period of time. Theproblem can be recognized by monitoring MemUsage under Windows NT TaskManager or by running Performance Monitor using the following counters:

   Object: Process   Counter: Handle count and Private Bytes   Instance: csrss				
CAUSE
There is a memory leak in Wow32.dll and Winbase.dll.
RESOLUTION
To resolve this problem, obtain the latest service pack for Windows NT 4.0 or Windows NT Server 4.0, Terminal Server Edition. For additional information, click the following article number to view the article in theMicrosoft Knowledge Base:
152734 How to Obtain the Latest Windows NT 4.0 Service Pack

STATUS
Microsoft has confirmed that this is a problem in Windows NT 4.0 and Windows NT Server 4.0, Terminal Server Edition. This problem was first corrected in Windows NT 4.0 Service Pack 4.0 and Windows NT Server 4.0, Terminal Server Edition Service Pack 4.
Properties

Article ID: 186495 - Last Review: 10/08/2013 02:54:49 - Revision: 2.2

  • Microsoft Windows NT Server 4.0, Terminal Server Edition
  • Microsoft Windows NT Server 4.0 Standard Edition
  • Microsoft Windows NT Workstation 4.0 Developer Edition
  • Microsoft Windows NT Server 4.0 Enterprise Edition
  • kbnosurvey kbarchive kbhotfixserver kbqfe kbbug kbfix kbqfe KB186495
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