How to Turn On or Off Core Isolation Memory Integrity in Windows 11

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This post shows students and new users steps to enable or disable Core Isolation Memory Integrity with Microsoft Security in Windows 11. Core Isolation is a security feature that protects important Windows’ core processes from malicious software such as ransomware.

Core Isolation works with Memory Integrity (aka Hypervisor-Protected Code Integrity (HVCI)) in Window to make it difficult for malicious software and scripts to use low-level drivers to hijack one’s computer. Windows Memory Integrity feature works by creating an isolated environment using hardware virtualization.

Without memory integrity running, the “security guard” stands right out in the open where it’s much easier for an attacker to interfere with or sabotage the guard, making it easier for malicious code to sneak past and cause problems.

How to enable or disable core isolation memory integrity in Windows 11

As mentioned above, core Isolation is a security feature in Windows that protects important core processes of Windows from malicious software such as ransomware.

This isolated environment (the locked booth in our analogy) prevents the memory integrity feature from being tampered with by an attacker.

Turn on Core Isolation Memory Integrity in Windows 11:

In the search box on the taskbar, type Windows Security and then select Windows Security in the list of results.

open windows security app

In Windows Security, select Device security.

On the Device security page, click the link that reads Core isolation details.

windows 11 core isolation memory integrity

Change the More integrity setting to On or Off.

windows 11 turn on memory integrity core isolation

If memory integrity fails to turn on it may tell you that you have an incompatible device driver already installed. Check with the manufacturer of the device to see if they have an updated driver available. 

That should do it!


This post showed you how to turn on or off core isolation memory integrity in Windows 11. If you find any error above or have something to add, please use the comment form below.

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