CoreIsolation

To enable it manually: ​
1. ​ Open Windows Security ​

2. ​ Go to Device security ​

3. ​ Under Core isolation, click Core isolation details ​

4. ​ Toggle Memory integrity to On ​

5. ​ Restart the system when prompted If the toggle is grayed out, one or more of the following conditions exists: 
​● ​ The processor does not support required virtualization features 
​● ​ Virtualization is disabled in firmware (UEFI/BIOS) 
​● ​ Secure Boot is disabled
● ​ An incompatible driver is preventing activation Checking Compatibility and Status The most reliable way to determine whether Memory Integrity is active and what is blocking it: Press Win + R → type msinfo32 → press Enter Look for these lines near the bottom: ​
● ​ Virtualization-based security = Running 
​● ​ Virtualization-based security Status = Running ​
● ​ Credential Guard = Running (if also enabled) ​
● ​ Memory integrity = On If it says “Not enabled” or “Supported, but disabled,” scroll up to “Device security” section for the reason (usually an incompatible driver).