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Microsoft Security Patch KB974431
This update improves the stability and reliability of Windows 7 and of Windows Server 2008 R2.
To install the correct version of this update, you must know whether you are running the 32-bit or the 64-bit version of Windows 7 or of Windows Server 2008 R2. If you are not sure which version of the Windows operating system you are running, or whether it is a 32-bit version or 64-bit version, see the "How to determine whether you are running a 32-bit or a 64-bit edition of Windows" section.
Information for advanced users and IT professionals
An update is available to resolve issues that affect some computers that are running Windows 7 or Windows Server 2008 R2. These issues are reported by customers who use the Error Reporting service or Microsoft Customer Support Services.
This update improves the stability and reliability of Windows 7 and of Windows Server 2008 R2 in various scenarios. This update resolves the following issues:
- When you view a PDF file that was created by using a 2007 Microsoft Office system document, the PDF file is displayed on the screen correctly. However, when the document is printed, some characters are missing. This problem occurs in fonts such as Calibri, Cambria, Courier New or Gabriola, in which characters such as "fi", "ti", "fl", and other combinations are frequently presented as ligatures.
- In certain scenarios, an Emergency Alert System (EAS) message does not automatically tune to the appropriate channel in Windows Media Center.
- You connect a secondary monitor to a computer that is running Windows 7. When the computer resumes from hibernation, a black screen is displayed.
- In certain scenarios, the Windows 7 Customer Experience Improvement Program (CEIP) diagnostic information settings are configured incorrectly for Windows Explorer. Only those users who are enrolled in the Windows 7 CEIP will be affected by this part of the update. This update limits the diagnostic information that can be collected by the CEIP.
- You put an x86-based computer that does not have Physical Address Extension (PAE) enabled into hibernation. However, it does not enter hibernation correctly. When you try to resume the computer from hibernation, a black screen is displayed. This issue does not affect x64-based or Itanium-based computers, or computers that have the Data Execution Prevention (DEP) feature enabled.
- A problem in Windows 7 affects the playback of certain media files in Windows Media Player, when Windows Media Player is started from Internet Explorer. Only those users whose media associations were changed incorrectly will be affected by this part of the update.
- On a computer that is running Windows 7, you use Windows Internet Explorer to open the certificate enrollment Web page and to install an end entity certificate. However, the installation fails. This issue occurs if the certificate chain for the new certificate cannot be built, or if the root certification authority (CA) has not first been installed in the Trusted Roots on the computer.
How to determine whether you are running a 32-bit or a 64-bit edition of Windows
To determine which version of Windows you are running, follow these steps:
- Click Start, right-click Computer, and then click Properties.
- A window appears where you can view basic information about your computer. In the System type information under the System section, you can see whether a 32-bit or 64-bit version of Windows 7 or of Windows Server 2008 R2 is listed.
The following files are available for download from the Microsoft Download Center:
Windows 7, 32-bit versions Download the Update for Windows 7 (KB974431) package now.
Windows 7, 64-bit versions Download the Update for Windows 7 for x64-based Systems (KB974431) package now.
Windows Server 2008 R2, 64 bit versions Download the Update for Windows Server 2008 R2 for x64-based Systems (KB974431) package now
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.
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