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). The update, identified as MS14-045 in Microsoft’s numbering, was one of nine released on “Patch Tuesday,” Aug. 12, 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 0x50 error on some systems, mostly on Windows 7 PCs running the 64-bit version of the OS. As of Sunday, the thread contained nearly 380 messages and had been viewed almost 50,000 times. The latter is a large number even for Microsoft’s support forum, and hints at the scope of the problem.