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Microsoft urges customers to uninstall ‘blue screen of death’ update

One of last week’s security updates has bricked an unknown number of PCs running Windows 7

Microsoft on Friday quietly recommended that customers uninstall one of last week’s security updates after users reported that it crippled their computers with the infamous ‘blue screen of death’ (BSOD).

Microsoft Blue Screen

The update, identified as MS14-045 in Microsoft’s numbering, was one of nine released on Patch Tuesday for 12 August was designed to fix three separate flaws, including one related to a font vulnerability and another in the Windows kernel, the heart of the operating system.

Within hours of its release, however, users reported that MS14-045 had generated a Stop 0×50 error on some systems, mostly on Windows 7 PCs running the 64-bit version of the OS.

“Installation went smoothly. After rebooting everything worked fine. But when I shut down my notebook and switched it on a little later it came up with a blue screen with a Stop 0×50 in Win32k.sys. I could not even boot into safe mode as Windows failed to start no matter which mode chose,” wrote a user identified as ‘xformer’ to start a now-long thread on Microsoft’s support discussion forum.

Others on that same discussion thread pointed to different updates issued the same day that caused identical problems, including one meant to support the Russian ruble symbol.

Some customers were able to regain control of their PCs by using System Restore to return the machine to a previous date, but only after they’d booted the computer using original install media.

Flawed

In the updated MS14-045 and other supporting documents, Microsoft said it had removed the patches from its Download Center. As of Saturday, however, the flawed update was still being pushed by Windows Update, Microsoft’s service for delivering patches to PCs.

 “Microsoft is investigating behaviour associated with the installation of this update, and will update this bulletin when more information becomes available,” the company said in the revised MS14-045′s Update FAQ. “Microsoft recommends that customers uninstall this update. As an added precaution, Microsoft has removed the download links to the 2982791 security update.”

Microsoft’s advice, however, may not be of any help to those already afflicted. It told users, for example, to boot using Safe Mode, which many on the support thread said didn’t work.

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