Hey Checkyourlogs Fans,

I had a customer call me this weekend with a weird issue. They would logon to a Hyper-V Server and would get the following error message stating the mmc.exe was blocked and basically anything that required this: Services.msc, devmgmt.msc, virtmgmt.msc wouldn’t run.

Here is how I reproduced the error:


Would return this:


It turns out the customer was running an Insiders Build of Windows Server 2019 and it had expired a few months back. The Hyper-V Host and Virtual Machines were still running and thus why were not notified of this earlier.


This looks like it is the September release of the Windows Insiders Build.

https://blogs.windows.com/windowsexperience/2018/08/21/announcing-windows-10-insider-preview-build-17744/#uc5hhx9JHxLSmKp7.97


What we are going to try is upgrading to an RTM Version of Windows Server 2019 which can actually be done in place.

I have seen trial versions of Windows Server 2016 expire with the RTM version before and that would just cause a rolling reboot loop. I’m not sure if expired RTM Trial media for WS2019 will do the same as this but it seems likely.


I had a bit of an issue because there were some running VM’s during the upgrade.


Because Hyper-V Manager was no longer Viable I just turned them off by using PowerShell

Get-VM | Stop-VM -Force


And away we go à I really hope that this will fix my issue up:


Yup sure enough that fixed up my issue.


I hope this blog saves you a ton of time.

Dave


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