FTP Service May Cause Deadlock in FTP and Other IIS Services (191822)
The information in this article applies to:
- Microsoft Internet Information Server 4.0
This article was previously published under Q191822 We strongly recommend that all users upgrade to Microsoft Internet Information Services (IIS) version 6.0 running on Microsoft Windows Server 2003. IIS 6.0 significantly increases Web infrastructure security. For more information about IIS security-related topics, visit the following Microsoft Web site: SYMPTOMS
The FTP service in the Windows NT Option Pack may cause a deadlock in the
Inetinfo process when timing out inactive users. This may cause other
services, such as the World Wide Web (w3svc) service, to become non-
responsive as well.
The symptoms are otherwise non-specific. You can determine whether you are
experiencing this problem only by debugging or by testing the hotfix
described below.
CAUSE
The lock is being held on a list when a completion routine for a timeout
is being called. This results in a deadlock. In the hotfix, the lock is
now released before calling the completion routine.
RESOLUTIONTo 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 this to be a problem in Internet Information
Server version 4.0.
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.
| Modification Type: | Minor | Last Reviewed: | 9/22/2005 |
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| Keywords: | kbHotfixServer kbQFE kbbug kbfix kbQFE KB191822 |
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