This browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 8%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
A few days into a fresh Windows 11 install, both
"Memory Integrity" and "Core Isolation" randomly turn off in Windows Security at the same time. It lets me turn it back on, but I'm worried about it.
So I've reinstalled Windows a few times to see what keeps tripping it. Finally I noticed something, on any fresh install of Windows 11; Core Isolation was always off by default. The only difference is that it had no yellow triangle warning to indicate that it is switched off.
It looks like something trips it up and it finally displays the warning that it's off some time later.
What could be causing Core Isolation to be off on any fresh installation of windows and is it cause for concern? It lets me switch it back on, but I want to know why it's happening.
I appreciate advice or information I can get!
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
Answer accepted by question author
Core Isolation in Windows Install is only necessary if SVM (Secure Virtual Machine) is enabled in your UEFI. Memory Integrity is disabled by default and must be enabled by the user after install, and you will be notified about it in the notification center soon after Windows is installed, only if SVM is enabled.
Answer accepted by question author
If SVM is disabled in UEFI, there's no reason for the Core Isolation feature to appear as it's not supported by the hardware.
To answer your question, no, there is no cause for concern. If you need any further help with this issue, absolutely feel free to let me know and I will be happy to help out.
Thank you for your detailed replies, I appreciate your help! I do have a few more questions about it, if that's okay.
If it is not meant to be showing up at all, that means that my motherboard turns it on by default. Is it best to turn it off or keep it on?
When windows security shows me the warning saying Core Isolation is off a few days later, it also switches off "Reputation-based protection". It lets me turn it back on, but it's strange it turns off at the same time that I finally get the warning about Core Isolation being off. The same thing has happened 4 times.
I was wondering why that could be and if it is a problem? Sorry if I havent explained it well.
Hey InsideoutFish. My name is Chris and I am a Windows Independent Expert. I will be happy to explain this to you so you understand it better...
