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January 2022 Patch Tuesday, critical issues appear

The first Patch Tuesday of 2022 for Windows Server releases does not appear to be going as planned. Reports are appearing to denounce these problems.

This major maintenance update from Microsoft was originally supposed to fix problems with Lightweight Directory Access Protocol (LDAP) and improve security. According to several returns, they are the source of “major” problems. For example a start loop is observed as well as the shutdown of the Hyper-V.

Windows Server and the January 2022 Patch Tuesday

Windows Server administrators signal Windows Servers loop restarts after installing KB5009624, KB5009595, and KB5009557. All versions would be affected. This loop is caused after the LSASS.exe process uses all resources and then exits. This results in a blue screen with error codes 0xc0000005 and 0xc0000006 followed by a restart of the operating system. This failure affects Windows servers acting as domain controllers.

The other issue is the Hyper-V which fails to start after installing these updates. Suddenly the virtual machines do not start either. The majority of reports indicate that the bug affects Windows Server 2012 R2. Some claim that this affects newer versions as well.

Finally, problems with ReFS (Windows Resilient File System) volumes are also noted. They are no longer accessible or displayed as unformatted.

In almost all cases, uninstalling the latest January 2022 Patch Tuesday updates fixes all of these issues. On the other hand, this procedure is problematic on the security side. Patch Tuesday updates provide cumulative fixes. Their uninstallation makes the PC vulnerable. This option is therefore only recommended in the event of a critical situation.

For the moment Microsoft has not spoken about all these concerns.

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