Microsoft KB Archive/926408

= Error message when a client tries to access resources on a Web site that uses ADFS: &quot;Access is Denied&quot; =

Article ID: 926408

Article Last Modified on 8/17/2007

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APPLIES TO


 * Microsoft Windows Server 2003 R2 Standard Edition (32-bit x86)
 * Microsoft Windows Server 2003 R2 Enterprise Edition (32-Bit x86)
 * Microsoft Windows Server 2003 R2 Datacenter Edition (32-Bit x86)
 * Microsoft Windows Server 2003 R2 Standard x64 Edition
 * Microsoft Windows Server 2003 R2 Enterprise x64 Edition
 * Microsoft Windows Server 2003 R2 Datacenter x64 Edition

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SYMPTOMS
After a client successfully authenticates on a Web site that uses Active Directory Federation Services (ADFS), the client receives the following error message when the client tries to access a resource on the Web site:

Access is Denied

When this problem occurs, the following event is logged in the Application log on the server that hosts the Web site: Event Type: Warning

Event Source: ADFS ISAPI Extension

Event Category: None

Event ID: 107

User: N/A

Description: The ADFS Web Agent Internet Server Application Programming Interface (ISAPI) Extension was unable to obtain a Windows NT token from the authentication service.

This problem occurs if the following conditions are true:
 * The server is running Microsoft Windows Server 2003 R2.
 * The server is running ADFS.
 * The server acts as a resource federation server that supports single sign-on authentication for an ADFS-enabled Web site.



CAUSE
This problem occurs because the incoming group claims of the account partner are unexpectedly removed. This situation occurs if the following conditions are true:
 * The resource group for an organization group claim has been modified.
 * The incoming group claims are mapped to this organization group claim.



Hotfix information
A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that is described in this article. Apply it only to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Windows Server 2003 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

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

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites
No prerequisites are required.

Restart requirement
You do not have to 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 Server 2003 R2, x64-based versions


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

Additional query words: Mapping

Keywords: kbwinserv2003postsp2fix kbexpertiseinter kbbug kbfix kbhotfixserver kbqfe kbpubtypekc KB926408

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