FIX: The POST data is unavailable for custom error pages in IIS 7.0

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When you use custom error pages for a Web site in Internet Information Services (IIS) 7.0, the POST data is not available for your error pages.

For example, this problem occurs when you customize an error page for error code 404 ("page not found"). To use this custom error page to redirect to a personalized page instead of returning an error message, you need to access the POST data to rewrite the URL. However, the POST data is not available.

Note This problem does not occur in IIS 6.0.
This problem occurs because of an issue in the custom error module. If any of the request POST data arrives together with the original request, the custom error code may not correctly pass the POST data to the custom error page.

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.

Important Windows Vista and Windows Server 2008 hotfixes are included in the same packages. However, only one of these products may be listed on the “Hotfix Request” page. To request the hotfix package that applies to both Windows Vista and Windows Server 2008, just select the product that is listed on the page.


You must have Windows Vista Service Pack 1 (SP1) installed to apply this hotfix.

Restart requirement

You do not have to restart the computer after you apply this hotfix. However, we recommend that you restart IIS 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.
IIS 7.0, x86
File nameFile versionFile sizeDateTimePlatform
IIS 7.0, x64
File nameFile versionFile sizeDateTimePlatform
IIS 7.0, IA-64
File nameFile versionFile sizeDateTimePlatform
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
More information
This hotfix sets the correct flag when IIS re-executes the request for the custom error. Therefore, the request POST data is passed along.
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

Article ID: 956578 - Last Review: 01/16/2015 06:07:00 - Revision: 3.0

Microsoft Internet Information Services 7.0

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