After reports became known that Windows XP computers could not be started after the last patch day, Microsoft took the patch MS010-015 from the download server.

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Windows XP blue screen caused by rootkit

Now the culprit seems to have been found.

According to Symantec, the rootkit Tidserv is responsible for this dilemma.

Investigations of affected computers revealed that malware was found on them.

More precisely the rootkit Tidserv which was hidden in the low level kernel driver.

Since the rootkit uses hard-coded virtual addresses, which were changed by the patch, the system could no longer be started.

We have a guide to clean up the system in one Previous article described.

(v.p.)