Microsoft presently confirmed that it is searching into reports that November's security updates have set off a black screen on several Windows users' PCs.

"Microsoft is inspecting intelligence that it’s most recent release of security updates is ensuing in system problem for a few customers," alleged a corporation spokesperson in an e-mail. "Once we complete our examination, we will offer full control on how to avoid or else deal with these issues."

The reports Microsoft alluded to stalked from U.K.-based security vendor Prevx, which asserted last Thursday that the Windows security updates issued on Nov. 10 tainted Access Control List (ACL) entries in the registry, avoiding various installed software from running correctly. The result, alleged Prevx, is a black screen, occasionally dubbed "black screen of death" in an offering to the "blue screen of death" that Windows puts up after a foremost system crash.

Prevx added that security application look like to be particularly affected. Even though the Microsoft spokesperson alleged the company would offer further information once its support and security teams total their investigations, it was uncertain exactly how wide the problem was, or else how many users were exaggerated.

Searches of Microsoft's sustain forums at present, such as, curved up only one "black screen" thread with posts after the Nov. 10 security updates had been revealed. Four unusual users on that Windows 7-specific thread alleged that they faced a blank screen.

On Nov. 19, a moderator of the sustain forum recommended a workaround that concerned starting one more Windows Explorer (explorer.exe) process. Prevx basically gave the similar suggestion a week later on when it told users with blank screens how to download a free of charge tool it said would resolve the issue.

Microsoft's November compilation of patches dealed with 15 vulnerabilities in six security updates.

Only one of the half-dozen updates incorporated a recognized problem. According to the complete support document for MS09-065, one of the month's three severe updates, clients using Windows XP as well as using an ATI Radeon HD 2400-series video card "may locate that the PC does not start properly."

Microsoft's upcoming security update release is scheduled on 8th of Dec.