Memory Leak if Large File Upload Is Cancelled Prematurely

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Article ID: 197377 - View products that this article applies to.
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We strongly recommend that all users upgrade to Microsoft Internet Information Services (IIS) version 7.0 running on Microsoft Windows Server 2008. IIS 7.0 significantly increases Web infrastructure security. For more information about IIS security-related topics, visit the following Microsoft Web site:
For more information about IIS 7.0, visit the following Microsoft Web site:
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If you use Request for Comment (RFC) 1867 to upload a large file to an Active Server Page (ASP) and the transfer procedure is terminated prematurely by the client, a memory leak the size of the file occurs. For example, if you are uploading a 10 megabyte (MB) file and then disconnect before the file is completely uploaded, the memory leak is 10MB. Note that the ASP page calls Request.BinaryRead.


To resolve this problem, obtain the latest service pack for Windows NT 4.0. 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

NOTE: You must install SP4 before installing this fix.


Microsoft has confirmed this to be a problem in Microsoft Internet Information Server version 4.0. This problem was first corrected in Windows NT 4.0 Service Pack 5.


Article ID: 197377 - Last Review: October 26, 2013 - Revision: 5.0
Applies to
  • Microsoft Internet Information Server 3.0
kbnosurvey kbarchive kbhotfixserver kbqfe kbbug kbfix KB197377

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