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Oct 7, 2011

x64 Windows 7 SP1 Can Cripple x86 Applications and Services

Microsoft is offerings customers an update designed to help them deal with x86-based applications or services being left crippled following the installation of Service Pack 1 (SP1) on computers running the 64-bit (x64) flavor of Windows 7. 

x64 Windows 7, as well as its 64-bit predecessors, can also run 32-bit applications, but it seems that SP1 upgrades can introduce some issues. 

According to the Redmond company, only customers running x64 Windows 7 or Windows Server 2008 R2 can be affected by the problem described in this article. 

The software giant stresses that customers must also be running “some x86-based applications or services on the computer. [They also need to] install updates through Windows update without first stopping the x86-based applications or services. These updates may include Windows 7 Service Pack 1 (SP1) or Windows Server 2008 R2 Service Pack 1 (SP1),” Microsoft said

“In this scenario, an error may occur in the x86-based applications or services, which causes the application or service to stop unexpectedly. This behavior may cause data loss.” 

KB 2487426 has been available for download since early 2011. The refresh comes in three versions, one for each of the variants of Windows 7 and Windows Server 2008 R2. 

Customers need to head over to the Microsoft Download Center in order to access the updates. They’ll be able to find the necessary links at the bottom of this article. 

“Updates to the Windows 7 and Windows Server 2008 R2 installation software are included in this update. The installation software is the component that handles the installation and the removal of software updates, language packs, optional Windows features, and service packs,” Microsoft said. 

“This update is necessary to successfully install and to remove any service packs to all versions of Windows 7 and on Windows Server 2008 R2.”

Windows 7 Service Pack 1 (SP1) RTM Build 7601.17514.101119-1850 and Windows Server 2008 R2 Service Pack 1 (SP1) RTM are available for download on link below.

Windows 7 RTM Enterprise 90-Day Evaluation is available for download here.


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