This issue occurs when several windows are displayed in multiple applications at the same time in Windows 7 Service Pack 1 (SP1) or Windows Server 2008 R2 SP1.
This issue occurs because memory leak occurs in Desktop Window Manager (DWM.exe) when a window changes its parent window in an application.
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 UpdateThis update is available from Windows Update.
Method 2: Microsoft Download CenterThe following files are available for download from the Microsoft Download Center:
For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
|All supported x86-based versions of Windows 7||Download the package now.|
|All supported x64-based versions of Windows 7||Download the package now.|
|All supported x64-based versions of Windows Server 2008 R2||Download the package now.|
|All supported IA-64-based versions of Windows Server 2008 R2||Download the package now.|
119591 How to obtain Microsoft support files from online servicesMicrosoft 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.
PrerequisitesTo install this update, install Service Pack 1 for Windows 7 or Windows Server 2008 R2.
Registry informationTo apply this update, you do not have to make any changes to the registry.
Restart requirementYou may have to restart the computer after you apply this update.
Update replacement informationThis update does not replace a previously released update.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Article ID: 3048761 - Last Review: Apr 21, 2015 - Revision: 1
Windows Server 2008 R2 Service Pack 1, Windows Server 2008 R2 Datacenter, Windows Server 2008 R2 Enterprise, Windows Server 2008 R2 Standard, Windows Server 2008 R2 Foundation, Windows Server 2008 R2 for Itanium-Based Systems, Windows 7 Service Pack 1, Windows 7 Ultimate, Windows 7 Enterprise, Windows 7 Professional, Windows 7 Home Premium, Windows 7 Home Basic, Windows 7 Starter