Newsletter Archives

  • Windows Server 2012 (not R2) goes into reboot loop after installing .NET patch KB 4533096

    I’m seeing many reports of reboot loops after folks install KB 4533096 – the “Security and Quality Rollup for .NET Framework 3.5, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2012 ”

    From Pradeep Soni on the Patchmanagement list:

    Post installation server stuck in reboot loop with onscreen repetitive notifications, “Notifying services that Windows is shutting down -> Stopping services -> Restarting”.

    Later, pressed F8 to bring out the Advanced Boot Options and selected “Start Windows Normally” and server booted without any issues. Again restarted the server and it came up normally and no further issues detected.

    Apparently you can also boot into Safe Mode. That boot won’t work, either, but your next normal boot will.

    UPDATE: It’s possible that this month’s MSRT is at fault, instead of the .NET patch. Note this thread on the Technet forum that describes the same problem with the November MSRT update.

    This Spiceworks thread talks about this month’s problem, but (so far) the culprit hasn’t been identified.