Server 2019 fails to boot after installing April updates (KB5001342)

gchq 1 Reputation point

Server 2019 failed to reboot after installing the latest updates with 'ACPI.sys is corrupt or missing'

After trying a plethora of possible fixes that got nowhere, DISM RevertPendingAction got it back up and running.

I did notice that, apart from the update, it was also installing a new service stack and I seem to remember installing service stacks and updates at the same time could be problematic.

Here are the questions.

Back in the day it was easy enough to select items to be installed (e.g. install the service stack, then come back and install updates that require a reboot). Is there any way to accomplish this with Mein Fuhrer updates?

Has anyone else experienced problems with this update?


Windows Server 2019
Windows Server 2019
A Microsoft server operating system that supports enterprise-level management, data storage, applications, and communications.
2,201 questions
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3 answers

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  1. Dave Patrick 329.9K Reputation points Microsoft MVP

    You can get the latest SSU here

    and the latest cumulative update here.

    --please don't forget to Accept as answer if the reply is helpful--

  2. Dave Patrick 329.9K Reputation points Microsoft MVP

    how do I separate them out and install the SSU first

    yes, by installing this one. SSU's cannot be uninstalled and would be skipped if it was already installed

    --please don't forget to Accept as answer if the reply is helpful--

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  3. Teemo Tang 11,021 Reputation points

    For current situation, you could paused update for some days, until a new update replace this KB5001342, then install the new KB.
    I notice that you found out ACPI.sys was changed by April update, what about replace updated ACPI.sys file by previous ACPI.sys after update but before restart.
    Besides, you could execute startup repair with a Server 2019 installation media when not boot issue appears.


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