Update the copy of the Cmitrust.dll file in Windows

This article describes an update that fixes an issue in Windows Server 2008 R2 and improves the copy of the Cmitrust.dll file in Windows 8.1, Windows RT 8.1, Windows 8, Windows RT, and Windows 7. Before you install this update, notice that the update has prerequisites. If you want to know more information about the Cmitrust.dll file, see the More information section.

Note This is an Optional update. If you have a Windows Server 2008 R2-based computer, you should install this update.

Issue that is fixed in this update

If the Protect object from accidental deletion option is enabled in the domain root object, some component updates cannot be installed on a read-only domain controller (RODC) in Windows Server 2008 R2 Service Pack 1 (SP1).

How to obtain this update

To resolve this issue,we have released an update through Windows Update and Microsoft Download Center. Even though this issue has only been observed in Windows Server 2008 R2, the update also applies to Windows 8.1, Windows RT 8.1, Windows 8, Windows RT, and Windows 7.

Important Do not install a language pack after you install this update. If you do, the language-specific changes in the update will not be applied, and you will have to reinstall the update. For more information, see Add language packs to Windows.

Method 1: Windows Update

This update is available from Windows Update.

Method 2: Microsoft Download Center

The following files are available for download from the Microsoft Download Center:
Operating systemUpdate
All supported x86-based versions of Windows 8.1Download Download the package now.
All supported x64-based versions of Windows 8.1 Download Download the package now.
All supported x86-based versions of Windows 8Download Download the package now.
All supported x64-based versions of Windows 8 Download Download the package now.
All supported x86-based versions of Windows 7Download Download the package now.
All supported x64-based versions of Windows 7Download Download the package now.
All supported x64-based versions of Windows Server 2008 R2Download Download the package now.
All supported IA-64-based versions of Windows Server 2008 R2Download Download the package now.
Note The update for Windows RT 8.1 or Windows RT can be obtained only from Windows Update.

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591 How to obtain Microsoft support files from online services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

Update detail information

Prerequisites

To install this update, you must have April 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 (2919355) installed in Windows 8.1. Or, install Service Pack 1 for Windows 7 or Windows Server 2008 R2.

Registry information

To apply this update, you do not have to make any changes to the registry.

Restart requirement

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

Update replacement information

This update does not replace a previously released update.
File information

Status

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

More Information

This update releases a new version of the cmitrust.dll file that is stored in the %windir%\system32\AdvancedInstallers directory. For Windows 8.1 and Windows 8 client operating systems, this file is present to keep versioning consistent between the version in the \AdvancedInstallers directory and the version that is held in the component store %windir%\winsxs. In Windows 7 SP1 and Windows 2008 R2 SP1, in addition to keeping versioning consistent, this version of the binary also contains a fix to update installation failure on RODCs. 

This issue also occurs in Windows 8.1 and Windows 8-based operating systems. You can install the following servicing stack updates to resolve the issue:

References

See the terminology that Microsoft uses to describe software updates.
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