Authentication through proxy fails in Windows Server 2012 or Windows Server 2008 R2 SP1

This article describes an issue that occurs in Active Directory Federation Services (AD FS) in Windows Server 2012 or Windows Server 2008 R2 Service Pack 1 (SP1). A hotfix is available to fix this issue.


This issue occurs when the proxy renews its trust token after certificates roll over in AD FS. This issue also occurs when AD FS certificates are replaced manually.


This issue occurs because AD FS services (ProxyPolicyServiceHost) on the Security Token Service (STS) isn't restarted after the certificate rollover and proxy trust renewal. It continues to use the old certificate for validating the proxy token.

Hotfix information

Important If you install a language pack after you install this hotfix, you must reinstall this hotfix. Therefore, we recommend that you install any language packs that you need before you install this hotfix. For more information, see Add language packs to Windows.

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that's described in this article. Apply this hotfix only to systems that are experiencing this specific problem.

If the hotfix is available for download, there's a "Hotfix Download Available" section at the top of this Knowledge Base article. If this section doesn't appear, submit a request to Microsoft Customer Service and Support to get 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 don't 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 website: Note The "Hotfix Download Available" form displays the languages for which the hotfix is available. If you don't see your language, it's because a hotfix isn't available for that language.


To apply this hotfix on Windows Server 2008 R2, you must install Service Pack 1 for Windows Server 2008 R2.

Registry information

To apply this hotfix, you don't have to make any changes to the registry.

Restart requirement

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

Hotfix replacement information

This hotfix doesn't replace a previously released hotfix.


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


See the terminology that Microsoft uses to describe software updates.

File Information

The English (United States) version of this software update installs files that have the attributes that are listed in the following tables. The dates and times for these files are listed in Coordinated Universal Time (UTC). Be aware that dates and times for these files on your local computer are displayed in your local time and with your current daylight saving time bias. The dates and times may also change when you perform certain operations on the files.
Windows Server 2012
Windows Server 2008 R2
Additional file information
Thuộc tính

ID Bài viết: 3094446 - Xem lại Lần cuối: 04-11-2015 - Bản sửa đổi: 1

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