Windows 10 1809 Hyper-V Broken?

I upgraded from 1803 to 1809 last week, before Microsoft withdrew 1809. Everything was fine as far as I could tell. Until today. Today I opened Hyper-V Manager so I could start my Windows 8.1 VM. Whe...

Andy Hufford
Oct 16, 2018
Ran into this one myself.
Found the answer at https://social.technet.microsoft.com/Forums/en-US/ee5b1d6b-09e2-49f3-a52c-820aafc316f9/hyperv-doesnt-work-after-upgrade-to-windows-10-1809?forum=win10itprovirt

Start -> Settings -> Update & Security -> Windows Security -> App & browser control -> [Exploit Protection] Exploit protection settings -> [Program Settings] [Find C:\WINDOWS\System32\vmcompute.exe and expand, then] -> Edit -> [Code flow guard (CFG)] UNCHECK 'Override system settings'

Start vmcompute service from services or command line with 'net start vmcompute'

Andy Hufford

Copper Contributor

Oct 16, 2018

Ran into this one myself.

Found the answer at https://social.technet.microsoft.com/Forums/en-US/ee5b1d6b-09e2-49f3-a52c-820aafc316f9/hyperv-doesnt-work-after-upgrade-to-windows-10-1809?forum=win10itprovirt

Start -> Settings -> Update & Security -> Windows Security -> App & browser control -> [Exploit Protection] Exploit protection settings -> [Program Settings] [Find C:\WINDOWS\System32\vmcompute.exe and expand, then] -> Edit -> [Code flow guard (CFG)] UNCHECK 'Override system settings'

Start vmcompute service from services or command line with 'net start vmcompute'

Rob Moore

Copper Contributor

Oct 18, 2018

Thanks! That fixed it!

Rob

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Windows 10 1809 Hyper-V Broken?

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