When you attempt to open an Office document from a remote Web folder by double-clicking the file in Windows Explorer (on Microsoft Windows 2000, the file is listed under My Network Places; on Microsoft Windows 95, Microsoft Windows 98, or Microsoft Windows Millennium Edition (Me), the file is listed under Web Folders), the application may not be able to open the file. This problem occurs when all of the following conditions are met:

•	The server requires Secure Sockets Layer (SSL) and a client certificate for authentication to the Web Folder.
•	The server is using Distributed Authoring and Versioning (DAV) for the publishing protocol, and not FrontPage Server Extensions (FPSE).
•	The client has installed Office XP, which has installed a new version of the OLE DB Provider for Internet Publishing (MSDAIPP).
•	The file in question is being opened by an application on the client that uses URL Moniker binding (URLMON) to open the Web resource (for example, Office 2000 or Office XP).

Note that this problem does not occur if you first copy the file to a local destination.

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The problem is caused by a regression in the OLE DB Provider for Internet Publishing (MSDAIPP) that ships with Office XP.

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To resolve this problem, obtain the latest service pack for Microsoft Office XP. For additional information, click the following article number to view the article in the Microsoft Knowledge Base: The following file is available for download from the Microsoft Download Center:
For additional information about how to download Microsoft Support files, click the following article number to view the article in the Microsoft Knowledge Base: Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help to prevent any unauthorized changes to the file. The English version should have the following file attributes or later:

    *** Digital Signature from Microsoft Corporation ***
    
   DigSig       Timestamp  Version        Size    File Name     
   -----------------------------------------------------------
   Sep-12-2001  23:28      5.0.2919.6304  371 KB  Pkmse54.exe 
				

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Microsoft has confirmed that this is a bug in the Microsoft products that are listed at the beginning of this article.
This problem was first corrected in Microsoft Office XP Service Pack 1.

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