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Rob Moore's avatar
Rob Moore
Copper Contributor
Oct 10, 2018
Solved

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's avatar
    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's avatar
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'

sfinney's avatar
sfinney
Copper Contributor
May 26, 2019

Andy Hufford 

 

By the way, I had just upgraded a Windows 10 Enterprise laptop to 19H1/1903 and had a similar problem (Hyper-V management not starting). This fix worked for me. 

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