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The WebDav DELETE command deletes all the Web site content on a server that is running IIS 6.0 if the sum of the path lengths for the virtual directories exceeds 4096 bytes

On a server that is running Internet Information Services (IIS) 6.0, you use the WebDav DELETE command to delete a folder under a virtual directory. If the sum of the path lengths for the virtual directories that are configured in that Web site exceeds 4096 bytes, you may also delete all the Web site content.

Note This issue does not occur in IIS 7.0.
This issue occurs because WebDav does not retrieve the virtual directories correctly. When the path length of a virtual directory exceeds the buffer size of 4096 bytes, physical folders are returned in addition to the virtual directories. In such case, the delete command removes the contents from unintended locations.

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 the problem described in this article. 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: 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.


You must have Windows Server 2003 Service Pack 1 or Windows Server 2003 Service Pack 2 installed to apply this hotfix.

Restart requirement

You have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

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.
IIS 6.0, x86
File nameFile versionFile sizeDateTimePlatformSP requirementService branch
Updspapi.dll6.3.4.1379,18401-Mar-200705:48x86NoneNot Applicable
IIS 6.0, x64
File nameFile versionFile sizeDateTimePlatformSP requirementService branch
Updspapi.dll6.3.4.1462,12806-Aug-20 0815:09x64NoneNot Applicable
IIS 6.0, ia64
File nameFile versionFile sizeDateTimePlatformSP requirementService branch
Updspapi.dll6.3.4.1655,15206-Aug-200815:09IA- 64NoneNot Applicable
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684Description of the standard terminology that is used to describe Microsoft software updates

Article ID: 956335 - Last Review: 11/26/2008 18:24:13 - Revision: 1.0

Microsoft Internet Information Services 6.0

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