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Error Message 426 Trying to Retrieve File from FTP Server

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Article ID:181743
Last Review:September 22, 2005
Revision:3.2
This article was previously published under Q181743
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 (http://www.microsoft.com/technet/security/prodtech/IIS.mspx)

SYMPTOMS

When you try to retrieve a file from the File Transfer Protocol (FTP) server, you receive the following error message:
426 Connection closed; transfer aborted.

You can still put files on the FTP server and list the contents of directories. Stopping and restarting the FTP Publishing Service does not correct the problem.

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CAUSE

The Microsoft FTP server inadvertently tries to create a synchronous socket instead of an asynchronous socket. This causes connections to fail with the 426 error.

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RESOLUTION

A supported fix that corrects this problem is now available from Microsoft and is included in Windows NT Service Pack 4.

The English version of this fix should have the following file attributes or later: 
   Date      Time     Size    File Name    Platform
   --------------------------------------------------
   10/15/98  09:17p  330,976  Asp.dll      (x86)
   10/15/98  09:17p   11,168  Ftpctrs2.dll
   10/15/98  09:16p   81,376  Ftpsvc2.dll
   10/15/98  09:15p   16,848  Infoadmn.dll
   10/15/98  09:15p  184,192  Infocomm.dll
   10/15/98  09:15p   47,936  Isatq.dll
   10/15/98  09:16p   14,752  W3ctrs.dll
   10/15/98  09:16p  226,864  W3svc.dll
   10/15/98  09:16p   60,192  Wam.dll

   10/15/98  09:37p  545,552  Asp.dll      (Alpha)
   10/15/98  09:36p   17,168  Ftpctrs2.dll
   10/15/98  09:36p  126,224  Ftpsvc2.dll
   10/15/98  09:35p   25,872  Infoadmn.dll
   10/15/98  09:35p  302,352  Infocomm.dll
   10/15/98  09:34p   82,704  Isatq.dll
   10/15/98  09:36p   21,264  W3ctrs.dll
   10/15/98  09:36p   380,688 W3svc.dll
   10/15/98  09:36p    98,576 Wam.dll

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STATUS

Microsoft has confirmed this to be a problem in Windows Internet Information Server (IIS) version 4.0.

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MORE INFORMATION

Stopping and restarting IIS 4.0 will temporarily correct the problem. This will also stop the World Wide Web Publishing Service.

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APPLIES TO
•Microsoft Internet Information Server 4.0

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Keywords: 
kbbug kbqfe kbpending kbhotfixserver KB181743

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