I'm trying to run Hyper-V on a freshly installed Windows 10 Pro (1709) on AMD FX 6350, 8 GB RAM.
Hyper-V Virtual Machine Management (vmms) starts properly but Hyper-V Host Compute Service (vmcompute) crashes with the error
Windows could not start the Hyper-V Host Compute Service on Local Computer. Error 0x80070005: Access is denied.
In the log only meaningless message
The Hyper-V Host Compute Service service terminated with the following error: General access denied error.
Googling finds a similar error when migrating or exporting virtual machines, but not the first time Hyper-V starts with no VMs are created.
Previously, this hardware was Windows 7 and Vmware Player worked fine. Now I want to try "native" virtualization.
By the way, exactly the same problem on the laptop on Intel i5-2430M.
This is known to be caused by disabling Windows
Control flow guard (CFG).
To turn this back on:
Search for and open
Windows Defender Security Center on the start menu.
App & browser control:
Scroll to the bottom and click on
Exploit protection settings:
Control flow guard (CFG) is set to
On by default:
This morning my Hyper-V was working, then this evening it wasn't. Disabling CFG was the only noteworthy activity I had done on Windows aside from regular application use. After re-enabling the feature, Hyper-V was working again for me.
I disabled the feature in the first place due to an issue with Windows 10 build 1709 which is severely impacting my TortoiseGit performance in that the diff tool takes about 5 seconds to open.
Another users comment on that page reports the same problem.
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