FTP Error 550 Occurs When You Use Put and Append Commands (287616)

The information in this article applies to:

Microsoft Internet Information Services 5.0

This article was previously published under Q287616

SYMPTOMS

When you append to a file immediately after you upload it to a Microsoft FTP server that is storing data on a UNC share, the following error message may appear:

550 "filename": The process cannot access the file because it is being used by another process

CAUSE

The append command attempts to open the file that you uploaded before the redirector has fully committed the file to disk.

WORKAROUND

Insert a delay between the put and the append commands to give the FTP server to commit the file.

RESOLUTION

To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

260910 How to Obtain the Latest Windows 2000 Service Pack

The English version of this fix should have the following file attributes or later:

   Date        Time     Version         Size      File name     
   -------------------------------------------------------------
   2/21/2001   10:54a   5.0.2195.3278   117,008   Ftpsvc2.dll

STATUS

Microsoft has confirmed that this is a problem in Internet Information Services 5.0. This problem was first corrected in Windows 2000 Service Pack 3.

Modification Type:	Minor	Last Reviewed:	9/23/2005
Keywords:	kbHotfixServer kbQFE kbbug kbfix kbnetwork kbWin2000PreSP3Fix kbWin2000sp3fix KB287616