Multikeysys Windows 11 -

Open the and type Windows Security , then press Enter. Navigate to Device Security in the left sidebar. Click on the Core isolation details link. Toggle the Memory integrity switch to Off . Restart your computer to apply the changes. Disable Secure Boot

If MultiKeySys is too old (last update 2019), try Aster V7 (better Win11 support but paid) or SoftXpand (enterprise). multikeysys windows 11

Save your settings and exit ( F10 ) to boot back into Windows 11. Step 2: Enabling Test Signing Mode Open the and type Windows Security , then press Enter

Once the computer restarts to the boot menu, select: > Advanced Options > Startup Settings > Restart . Toggle the Memory integrity switch to Off

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Users on forums such as Reddit r/Windows11 and TechPowerUp have reported that legacy versions of MultikeySys (v1.2 and v2.0) run successfully on Windows 11 Home and Pro, provided you tweak a few settings.