

It seems that these two patches, as with most SSU patches, need to be installed exclusively (which Microsoft does mention in the installation procedure). Both the November 2019 Servicing Stack Update (SSU) KB4523208 and the December SSU KB4532920 for Windows Server 2012 seem to be causing the reboot loops according to some users on Twitter and Reddit. In a reboot loop this is highly unlikely, but hey, since this was happening on more than one virtual machine we just want to be sure right?Īfter some troubleshooting it seemed that, the reboot loop was a result of patching Windows Server 2012 virtual machines the incorrect way. I figured I would just check the environment to see if anything infrastructure related was causing the issues. Since this was happening on a relatively large scale I didn’t know that the reboot loop was because of some faulty Windows patches. It has recently come to my attention that these patches seem to break Windows Server 2012 virtual machines! They appear to cause a reboot loop, which cannot be interrupted.

In November and December 2019, Microsoft released a few new patches just like any other month to patch certain issues in Windows Server 2012.
