Microsoft KB Archive/174764

= Memory Leak in Ntfs.sys =

Article ID: 174764

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Server 4.0, Terminal Server Edition
 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT Server 4.0 Standard Edition

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This article was previously published under Q174764



SYMPTOMS
A system will leak pageable memory when a large amount of mounts and dismounts are done on an NTFS partition.



CAUSE
The driver Ntfs.sys was not releasing memory acquired on a mount request on a dismount request. The memory leak is small, so the problem will usually show up after a period of days. Poolmon can be used to check this problem. Look for FSrtl tag taking up a lot of the pageable memory. Performance Monitor can also be used to monitor pageable memory use.



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 the Microsoft 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.

Keywords: kbhotfixserver kbqfe kbbug kbdriver kbfix KB174764

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