When you try to access files on a WebDAV site that uses only Digest authentication, the process may fail on a Windows Vista-based computer

When you try to access files on a WebDAV site that uses only Digest authentication, the process may fail on a Windows Vista-based computer

Article ID : 941850
Last Review : May 13, 2008
Revision : 1.0
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SYMPTOMS

On a Windows Vista-based computer, you try to access files on a Web Distributed Authoring and Versioning (WebDAV) site that uses only Digest authentication. However, the process may fail after you are prompted three times for your user credentials and password.

If you use a network trace when this problem occurs, the network trace may indicate that the WebDAV server generates a code 401 (Authorization Required) error.

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CAUSE

When the WebDAV client in Windows Vista sends an OPTION request, the client expects an authentication required message back from the WebDAV server. However, some WebDAV servers do not send this message. Therefore, the client is not authenticated.

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RESOLUTION

Hotfix information

A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451 (http://go.microsoft.com/?linkid=6294451)

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support (http://support.microsoft.com/contactus/?ws=support)

Prerequisites

No prerequisites are required.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Windows Vista, 32-bit editions
File name File version File size Date Time Platform
Package_1_for_kb941850~31bf3856ad364e35~x86~~6.0.1.0.mum Not Applicable 1,777 01-May-2008 23:46 Not Applicable
Package_2_for_kb941850~31bf3856ad364e35~x86~~6.0.1.0.mum Not Applicable 2,163 01-May-2008 23:46 Not Applicable
Package_3_for_kb941850~31bf3856ad364e35~x86~~6.0.1.0.mum Not Applicable 2,228 01-May-2008 23:46 Not Applicable
Package_4_for_kb941850~31bf3856ad364e35~x86~~6.0.1.0.mum Not Applicable 2,228 01-May-2008 23:46 Not Applicable
Package_for_kb941850_client_0~31bf3856ad364e35~x86~~6.0.1.0.mum Not Applicable 1,408 01-May-2008 23:46 Not Applicable
Package_for_kb941850_client_1~31bf3856ad364e35~x86~~6.0.1.0.mum Not Applicable 1,641 01-May-2008 23:46 Not Applicable
Package_for_kb941850_client~31bf3856ad364e35~x86~~6.0.1.0.mum Not Applicable 1,712 01-May-2008 23:46 Not Applicable
Package_for_kb941850_server_0~31bf3856ad364e35~x86~~6.0.1.0.mum Not Applicable 1,408 01-May-2008 23:46 Not Applicable
Package_for_kb941850_server~31bf3856ad364e35~x86~~6.0.1.0.mum Not Applicable 1,431 01-May-2008 23:46 Not Applicable
Update.mum Not Applicable 2,050 01-May-2008 23:46 Not Applicable
X86_8b6bbf650365b3f6405082de5a9e0a7b_31bf3856ad364e35_6.0.6001.22170_none_6773a664df1a2ee0.manifest Not Applicable 1,412 01-May-2008 23:46 Not Applicable
X86_8d0a289ff6536d1d2f1c6b04a298c5f7_31bf3856ad364e35_6.0.6001.22170_none_5da8ab231f33eeea.manifest Not Applicable 709 01-May-2008 23:46 Not Applicable
X86_c3992e9833fa67e9bf11d23102ef1b38_31bf3856ad364e35_6.0.6001.22170_none_d6b7a0e7dd737e23.manifest Not Applicable 1,059 01-May-2008 23:46 Not Applicable
X86_dc003fa167f5e5782f3910cabd2aaf8c_31bf3856ad364e35_6.0.6000.20826_none_00a63860366d48fe.manifest Not Applicable 1,412 01-May-2008 23:46 Not Applicable
X86_microsoft-windows-webdavredir-davclient_31bf3856ad364e35_6.0.6000.20826_none_92612b2e6e411670.manifest Not Applicable 5,069 01-May-2008 03:35 Not Applicable
X86_microsoft-windows-webdavredir-davclient_31bf3856ad364e35_6.0.6001.22170_none_940b56966b959de5.manifest Not Applicable 5,069 01-May-2008 03:57 Not Applicable
X86_microsoft-windows-webdavredir-mrxdav_31bf3856ad364e35_6.0.6000.20826_none_133ea726e1bd8086.manifest Not Applicable 13,639 01-May-2008 03:32 Not Applicable
X86_microsoft-windows-webdavredir-mrxdav_31bf3856ad364e35_6.0.6001.22170_none_14e8d28edf1207fb.manifest Not Applicable 13,642 01-May-2008 03:55 Not Applicable
X86_microsoft-windows-webdavredir-webclient_31bf3856ad364e35_6.0.6000.20826_none_53b98babcfb37f6d.manifest Not Applicable 6,904 01-May-2008 03:36 Not Applicable
X86_microsoft-windows-webdavredir-webclient_31bf3856ad364e35_6.0.6001.22170_none_5563b713cd0806e2.manifest Not Applicable 6,904 01-May-2008 03:59 Not Applicable
Davclnt.dll 6.0.6000.20826 54,272 01-May-2008 03:16 x86
Davclnt.dll 6.0.6001.22170 54,272 01-May-2008 03:22 x86
Mrxdav.sys 6.0.6000.20826 113,152 01-May-2008 00:48 x86
Mrxdav.sys 6.0.6001.22170 113,152 01-May-2008 00:54 x86
Webclnt.dll 6.0.6000.20826 196,608 01-May-2008 03:20 Not Applicable
Webclnt.dll 6.0.6001.22170 197,120 01-May-2008 03:28 Not Applicable
Windows Vista, 64-bit editions
File name File version File size Date Time Platform
Amd64_02d4aa7f877fca746224d0e6224f5dd9_31bf3856ad364e35_6.0.6000.20826_none_cdcce6f0a82c5600.manifest Not Applicable 2,126 01-May-2008 23:46 Not Applicable
Amd64_5a92aae043892b97816a3ad911023ddd_31bf3856ad364e35_6.0.6001.22170_none_a583e2fb99aec674.manifest Not Applicable 2,126 01-May-2008 23:46 Not Applicable
Amd64_777c92d38b1a368cb98b9c59592c2d27_31bf3856ad364e35_6.0.6001.22170_none_e6c75e7b7c6a86b1.manifest Not Applicable 2,478 01-May-2008 23:46 Not Applicable
Amd64_microsoft-windows-webdavredir-davclient_31bf3856ad364e35_6.0.6000.20826_none_ee7fc6b2269e87a6.manifest Not Applicable 5,087 01-May-2008 03:49 Not Applicable
Amd64_microsoft-windows-webdavredir-davclient_31bf3856ad364e35_6.0.6001.22170_none_f029f21a23f30f1b.manifest Not Applicable 5,087 01-May-2008 04:17 Not Applicable
Amd64_microsoft-windows-webdavredir-mrxdav_31bf3856ad364e35_6.0.6000.20826_none_6f5d42aa9a1af1bc.manifest Not Applicable 13,903 01-May-2008 03:47 Not Applicable
Amd64_microsoft-windows-webdavredir-mrxdav_31bf3856ad364e35_6.0.6001.22170_none_71076e12976f7931.manifest Not Applicable 13,906 01-May-2008 04:14 Not Applicable
Amd64_microsoft-windows-webdavredir-webclient_31bf3856ad364e35_6.0.6000.20826_none_afd8272f8810f0a3.manifest Not Applicable 6,934 01-May-2008 03:51 Not Applicable
Amd64_microsoft-windows-webdavredir-webclient_31bf3856ad364e35_6.0.6001.22170_none_b182529785657818.manifest Not Applicable 6,934 01-May-2008 04:20 Not Applicable
Package_1_for_kb941850~31bf3856ad364e35~amd64~~6.0.1.0.mum Not Applicable 2,860 01-May-2008 23:46 Not Applicable
Package_2_for_kb941850~31bf3856ad364e35~amd64~~6.0.1.0.mum Not Applicable 2,922 01-May-2008 23:46 Not Applicable
Package_3_for_kb941850~31bf3856ad364e35~amd64~~6.0.1.0.mum Not Applicable 2,696 01-May-2008 23:46 Not Applicable
Package_for_kb941850_client_0~31bf3856ad364e35~amd64~~6.0.1.0.mum Not Applicable 1,416 01-May-2008 23:46 Not Applicable
Package_for_kb941850_client_1~31bf3856ad364e35~amd64~~6.0.1.0.mum Not Applicable 1,375 01-May-2008 23:46 Not Applicable
Package_for_kb941850_client~31bf3856ad364e35~amd64~~6.0.1.0.mum Not Applicable 1,721 01-May-2008 23:46 Not Applicable
Package_for_kb941850_server_0~31bf3856ad364e35~amd64~~6.0.1.0.mum Not Applicable 1,416 01-May-2008 23:46 Not Applicable
Package_for_kb941850_server~31bf3856ad364e35~amd64~~6.0.1.0.mum Not Applicable 1,438 01-May-2008 23:46 Not Applicable
Update.mum Not Applicable 2,064 01-May-2008 23:46 Not Applicable
Wow64_microsoft-windows-webdavredir-mrxdav_31bf3856ad364e35_6.0.6001.22170_none_7b5c1864cbd03b2c.manifest Not Applicable 8,609 01-May-2008 03:45 Not Applicable
Davclnt.dll 6.0.6000.20826 72,704 01-May-2008 03:26 x64
Davclnt.dll 6.0.6001.22170 72,704 01-May-2008 03:48 x64
Mrxdav.sys 6.0.6000.20826 137,216 01-May-2008 01:00 x64
Mrxdav.sys 6.0.6001.22170 137,216 01-May-2008 01:21 x64
Webclnt.dll 6.0.6000.20826 214,016 01-May-2008 03:29 x64
Webclnt.dll 6.0.6001.22170 214,528 01-May-2008 03:53 x64
Mrxdav.sys 6.0.6001.22170 113,152 01-May-2008 00:54 x86

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STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the Applies to section.

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MORE INFORMATION

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

824684 (/) Description of the standard terminology that is used to describe Microsoft software updates

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APPLIES TO
• Windows Vista Home Premium
• Windows Vista Home Basic
• Windows Vista Enterprise
• Windows Vista Ultimate
• Windows Vista Business
• Windows Vista Business 64-bit Edition
• Windows Vista Ultimate 64-bit Edition
• Windows Vista Home Premium 64-bit Edition
• Windows Vista Home Basic 64-bit Edition
• Windows Vista Enterprise 64-bit Edition

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Keywords: 
kbexpertisebeginner kbexpertiseinter kbbug kbfix kbhotfixserver kbqfe KB941850

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Microsoft Knowledge Base Article

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