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Core Isolation won't turn back on

I used to be able to freely toggle core isolation on and off, I had to turn it off so I run VM's (apparently Windows 10 Home doesn't like sharing when it comes to virtualisation), anyway a month later I decided it's not worth turning off everything that uses virtualisation just because I want to run VM's. So any idea why I can't re-enable Core Isolation.
Hi OldGnashburg, I am Rob, an independent and a 12 time and dual award MVP specializing in Windows troubleshooting and Bluescreen analysis. Please remember as independents we are not responsible for the development of Windows or the computer hardware and drivers. If you will work with me I will be here to help until the issue is resolved.

Do your have Virtualization enabled for the CPU in the UEFI Firmware settings?

You may have something installed (or even that used to be installed) that prevents it being toggled.


Copy between the lines then paste the below into Notepad (or any text editor) and save as CoreIsolationOff.reg. Right Click on it and select "Merge".

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Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\DeviceGuard\Scenarios\HypervisorEnforcedCodeIntegrity]
"Enabled"=dword:00000000

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How to Turn On or Off Core Isolation Memory Integrity in Windows 10
https://www.tenforums.com/tutorials/104025-turn...

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BTW, it will be necessary to restart the computer.

Rob

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Last updated March 10, 2024 Views 6,485 Applies to: