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

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Article ID: 941850 - View products that this article applies to.
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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.

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.

RESOLUTION

Hotfix information

A supported hotfix is 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 software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if 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. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:
http://support.microsoft.com/contactus/?ws=support
Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

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
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Package_1_for_kb941850~31bf3856ad364e35~x86~~6.0.1.0.mumNot Applicable1,77701-May-200823:46Not Applicable
Package_2_for_kb941850~31bf3856ad364e35~x86~~6.0.1.0.mumNot Applicable2,16301-May-200823:46Not Applicable
Package_3_for_kb941850~31bf3856ad364e35~x86~~6.0.1.0.mumNot Applicable2,22801-May-200823:46Not Applicable
Package_4_for_kb941850~31bf3856ad364e35~x86~~6.0.1.0.mumNot Applicable2,22801-May-200823:46Not Applicable
Package_for_kb941850_client_0~31bf3856ad364e35~x86~~6.0.1.0.mumNot Applicable1,40801-May-200823:46Not Applicable
Package_for_kb941850_client_1~31bf3856ad364e35~x86~~6.0.1.0.mumNot Applicable1,64101-May-200823:46Not Applicable
Package_for_kb941850_client~31bf3856ad364e35~x86~~6.0.1.0.mumNot Applicable1,71201-May-200823:46Not Applicable
Package_for_kb941850_server_0~31bf3856ad364e35~x86~~6.0.1.0.mumNot Applicable1,40801-May-200823:46Not Applicable
Package_for_kb941850_server~31bf3856ad364e35~x86~~6.0.1.0.mumNot Applicable1,43101-May-200823:46Not Applicable
Update.mumNot Applicable2,05001-May-200823:46Not Applicable
X86_8b6bbf650365b3f6405082de5a9e0a7b_31bf3856ad364e35_6.0.6001.22170_none_6773a664df1a2ee0.manifestNot Applicable1,41201-May-200823:46Not Applicable
X86_8d0a289ff6536d1d2f1c6b04a298c5f7_31bf3856ad364e35_6.0.6001.22170_none_5da8ab231f33eeea.manifestNot Applicable70901-May-200823:46Not Applicable
X86_c3992e9833fa67e9bf11d23102ef1b38_31bf3856ad364e35_6.0.6001.22170_none_d6b7a0e7dd737e23.manifestNot Applicable1,05901-May-200823:46Not Applicable
X86_dc003fa167f5e5782f3910cabd2aaf8c_31bf3856ad364e35_6.0.6000.20826_none_00a63860366d48fe.manifestNot Applicable1,41201-May-200823:46Not Applicable
X86_microsoft-windows-webdavredir-davclient_31bf3856ad364e35_6.0.6000.20826_none_92612b2e6e411670.manifestNot Applicable5,06901-May-200803:35Not Applicable
X86_microsoft-windows-webdavredir-davclient_31bf3856ad364e35_6.0.6001.22170_none_940b56966b959de5.manifestNot Applicable5,06901-May-200803:57Not Applicable
X86_microsoft-windows-webdavredir-mrxdav_31bf3856ad364e35_6.0.6000.20826_none_133ea726e1bd8086.manifestNot Applicable13,63901-May-200803:32Not Applicable
X86_microsoft-windows-webdavredir-mrxdav_31bf3856ad364e35_6.0.6001.22170_none_14e8d28edf1207fb.manifestNot Applicable13,64201-May-200803:55Not Applicable
X86_microsoft-windows-webdavredir-webclient_31bf3856ad364e35_6.0.6000.20826_none_53b98babcfb37f6d.manifestNot Applicable6,90401-May-200803:36Not Applicable
X86_microsoft-windows-webdavredir-webclient_31bf3856ad364e35_6.0.6001.22170_none_5563b713cd0806e2.manifestNot Applicable6,90401-May-200803:59Not Applicable
Davclnt.dll6.0.6000.2082654,27201-May-200803:16x86
Davclnt.dll6.0.6001.2217054,27201-May-200803:22x86
Mrxdav.sys6.0.6000.20826113,15201-May-200800:48x86
Mrxdav.sys6.0.6001.22170113,15201-May-200800:54x86
Webclnt.dll6.0.6000.20826196,60801-May-200803:20Not Applicable
Webclnt.dll6.0.6001.22170197,12001-May-200803:28Not Applicable
Windows Vista, 64-bit editions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Amd64_02d4aa7f877fca746224d0e6224f5dd9_31bf3856ad364e35_6.0.6000.20826_none_cdcce6f0a82c5600.manifestNot Applicable2,12601-May-200823:46Not Applicable
Amd64_5a92aae043892b97816a3ad911023ddd_31bf3856ad364e35_6.0.6001.22170_none_a583e2fb99aec674.manifestNot Applicable2,12601-May-200823:46Not Applicable
Amd64_777c92d38b1a368cb98b9c59592c2d27_31bf3856ad364e35_6.0.6001.22170_none_e6c75e7b7c6a86b1.manifestNot Applicable2,47801-May-200823:46Not Applicable
Amd64_microsoft-windows-webdavredir-davclient_31bf3856ad364e35_6.0.6000.20826_none_ee7fc6b2269e87a6.manifestNot Applicable5,08701-May-200803:49Not Applicable
Amd64_microsoft-windows-webdavredir-davclient_31bf3856ad364e35_6.0.6001.22170_none_f029f21a23f30f1b.manifestNot Applicable5,08701-May-200804:17Not Applicable
Amd64_microsoft-windows-webdavredir-mrxdav_31bf3856ad364e35_6.0.6000.20826_none_6f5d42aa9a1af1bc.manifestNot Applicable13,90301-May-200803:47Not Applicable
Amd64_microsoft-windows-webdavredir-mrxdav_31bf3856ad364e35_6.0.6001.22170_none_71076e12976f7931.manifestNot Applicable13,90601-May-200804:14Not Applicable
Amd64_microsoft-windows-webdavredir-webclient_31bf3856ad364e35_6.0.6000.20826_none_afd8272f8810f0a3.manifestNot Applicable6,93401-May-200803:51Not Applicable
Amd64_microsoft-windows-webdavredir-webclient_31bf3856ad364e35_6.0.6001.22170_none_b182529785657818.manifestNot Applicable6,93401-May-200804:20Not Applicable
Package_1_for_kb941850~31bf3856ad364e35~amd64~~6.0.1.0.mumNot Applicable2,86001-May-200823:46Not Applicable
Package_2_for_kb941850~31bf3856ad364e35~amd64~~6.0.1.0.mumNot Applicable2,92201-May-200823:46Not Applicable
Package_3_for_kb941850~31bf3856ad364e35~amd64~~6.0.1.0.mumNot Applicable2,69601-May-200823:46Not Applicable
Package_for_kb941850_client_0~31bf3856ad364e35~amd64~~6.0.1.0.mumNot Applicable1,41601-May-200823:46Not Applicable
Package_for_kb941850_client_1~31bf3856ad364e35~amd64~~6.0.1.0.mumNot Applicable1,37501-May-200823:46Not Applicable
Package_for_kb941850_client~31bf3856ad364e35~amd64~~6.0.1.0.mumNot Applicable1,72101-May-200823:46Not Applicable
Package_for_kb941850_server_0~31bf3856ad364e35~amd64~~6.0.1.0.mumNot Applicable1,41601-May-200823:46Not Applicable
Package_for_kb941850_server~31bf3856ad364e35~amd64~~6.0.1.0.mumNot Applicable1,43801-May-200823:46Not Applicable
Update.mumNot Applicable2,06401-May-200823:46Not Applicable
Wow64_microsoft-windows-webdavredir-mrxdav_31bf3856ad364e35_6.0.6001.22170_none_7b5c1864cbd03b2c.manifestNot Applicable8,60901-May-200803:45Not Applicable
Davclnt.dll6.0.6000.2082672,70401-May-200803:26x64
Davclnt.dll6.0.6001.2217072,70401-May-200803:48x64
Mrxdav.sys6.0.6000.20826137,21601-May-200801:00x64
Mrxdav.sys6.0.6001.22170137,21601-May-200801:21x64
Webclnt.dll6.0.6000.20826214,01601-May-200803:29x64
Webclnt.dll6.0.6001.22170214,52801-May-200803:53x64
Mrxdav.sys6.0.6001.22170113,15201-May-200800:54x86

STATUS

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

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

Properties

Article ID: 941850 - Last Review: May 13, 2008 - Revision: 1.1
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
Keywords: 
kbautohotfix kbexpertisebeginner kbexpertiseinter kbbug kbfix kbhotfixserver kbqfe KB941850

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