Hi Christine,
I understand that you are experiencing an issue with the "Memory Integrity Off" warning in Windows 11.
The reason you are receiving this pop-up warning is that Windows 11 turns off memory integrity by default, but you can manually turn it on to improve the security of your system.
Memory integrity is a protection mechanism that prevents malware and attackers from modifying and tampering with the operating system memory. Turning this feature on adds an extra layer of protection to your device, thereby reducing the risk of attack.
Below are the steps to turn on this feature:
Please open Windows 11 "Settings", go to "Privacy and Security" in the lower left corner, select "Open Windows Security Center", and then go to "Privacy and Security". , then go to "Device Security", click on "Kernel Isolation Details" on the right, and finally "Turn on "Memory Integrity". After completing this step, the warning you received should be gone.
I hope the above information is useful to you, please feel free to contact me if there is anything you are not sure about or need help with.
Best Regards,
Ian - MSFT | Microsoft Community Support Specialist