FTP Deadlocks Under Heavy Load (190142)

The information in this article applies to:

Microsoft Windows NT Server 4.0 Terminal Server Edition
Microsoft Internet Information Server 4.0

This article was previously published under Q190142

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:

http://www.microsoft.com/technet/security/prodtech/IIS.mspx

SYMPTOMS

File Transfer Protocol (FTP) may deadlock under heavy load.

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 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.

MORE INFORMATION

For additional information about FTP deadlocking, see the following Knowledge Base article:

191822 : FTP Service May Cause Deadlock in FTP and Other IIS Services

Modification Type:	Minor	Last Reviewed:	9/22/2005
Keywords:	kbHotfixServer kbQFE kbbug kbfix kbQFE KB190142