Microsoft KB Archive/823544

= MD_ETAG_CHANGENUMBER metabase property is not honored in Internet Information Services version 6.0 =

Article ID: 823544

Article Last Modified on 12/3/2007

-

APPLIES TO


 * Microsoft Internet Information Services 6.0

-





SYMPTOMS
When you set the MD_ETAG_CHANGENUMBER metabase property in Microsoft Internet Information Services version 6.0 to improve Web browser caching performance, performance does not improve.



CAUSE
Internet Information Services version 6.0 does not honor the MD_ETAG_CHANGENUMBER metabase property.



RESOLUTION
After you install this hotfix, Internet Information Services version 6.0 honors the MD_ETAG_CHANGENUMBER property.

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

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

Prerequisites
No prerequisites are required.

Restart requirement
You do not have to restart your 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 tool in Control Panel.   Date         Time   Version            Size    File name --  27-Jun-2003  02:36  6.0.3790.67       336,384  W3core.dll 26-Jun-2003 14:47                        271  Branches.inf 27-Jun-2003 12:10                     10,091  Kb823544.cat 27-Jun-2003 02:44                        354  Updatebr.inf 27-Jun-2003 02:44                      5,034  Update_rtmqfe.inf



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



MORE INFORMATION
The ETAG value for a static file response is generated by using the last-changed time and the metabase change-number. In Internet Information Services version 5.0, the MD_ETAG_CHANGENUMBER metabase property is used instead of the metabase change-number if the MD_ETAG_CHANGENUMBER metabase property, ID 2039, is present.

When certain metabase properties are changed, Internet Information Services version 5.0 automatically updates the MD_ETAG_CHANGENUMBER metabase property. Because of architectural changes in Internet Information Services version 6.0, the MD_ETAG_CHANGENUMBER metabase property is not automatically updated.

The following Internet Information Services version 5.0 properties do not apply to Internet Information Services version 6.0:
 * HttpPics property
 * DefaultDoc property
 * DefaultDocFooter property
 * EnableDocFooter property
 * ScriptMaps property
 * MimeMap property
 * EnableDefaultDoc property
 * AspCodepage property
 * AspEnableApplicationRestart property

Note You must have administrator permissions to update a property manually. You want to do this to keep the value of the property synchronized with different members of a Web farm.

Additional query words: iis etag cache client web browser

Keywords: kbbug kbfix kbqfe kbwinserv2003presp1fix kbhotfixserver KB823544

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.