Turn On or Off Core Isolation Memory Integrity in Windows 10  

Another Logitech user here. The driver for the G403 wireless mouse seems to have some sort of issue with this enabled.

It's working flawlessly but Windows keeps informing me that a driver isn't working properly. Will report back if the situation changes.

The sort of slowdowns that you might be seeing with this turned on have more to do with I/O, so disk, network, display. Memory benchmarks shouldn't slow down very much, maybe memory allocations (malloc, free) could be slower, but that tends to be batched in large chunks in the background anyways.

Also, your very recent 8700k should have instructions that keep the settings of both sides of the virtualization 'fence' resident on the CPU core, so the switch is much faster than on older CPUs (say < 2015)

I had BSODs while installing PUBG Mobile in Tencent Emulator. Later, I turned off Advanced Virtualization in Avast but it didn't help. Later, I turned off Core Isolation and Windows Defender Periodic Scanning as I already have Avast. This time, it installed successfully. But now, when I try to turn on Core Isolation, it again gives the same BSOD with error : Stopcode: Page_Fault_In_Nonpaged_Area.
Here are what I tried: Memory Check (No issues detected), Disk Scan (yet to do), Disabling and Re-enabling page file size. Help me if Core Isolation is important.

Henk Poley said:

The sort of slowdowns that you might be seeing with this turned on have more to do with I/O, so disk, network, display. Memory benchmarks shouldn't slow down very much, maybe memory allocations (malloc, free) could be slower, but that tends to be batched in large chunks in the background anyways.

Also, your very recent 8700k should have instructions that keep the settings of both sides of the virtualization 'fence' resident on the CPU core, so the switch is much faster than on older CPUs (say < 2015)

I registered just to make this post (I may stay a while, though, if you guys don't mind). I enabled this 'Memory Integrity' setting a few days ago on my rather fresh Win10 install thinking maybe it would be somehow beneficial. But I've had nothing but problems since then and I stumbled on this thread while looking for a solution to turn it off (since MS seems to have forgotten to include the 'Off' button). As you could see looking at my system specs, I, in fact, do have an older Core i5 (first gen...does that make me an 'OG'?) and my system has been bogged down considerably, especially with regards to CPU Utilization. I'd say, off hand, that it's doubled from normal. At first, I'd totally forgotten I'd turned the setting on and thought I'd somehow been hit with malware or a trojan and did all sorts of checks and scans but came up with nothing. Everything is clean, as it should be.

I sat for a good day wracking my brain, trying to find a cause. One thing I noticed was an app I use to tether my internet connection from my cell phone (it's much faster than the satellite internet we have for the house...like not even a fair fight), called PdaNet, which you have to install on your phone (requires USB Debugging to be enabled) and in Windows was using, on it's own, on average, around 40-50% of my CPU usage idle and then spiking to over 70% when downloading or browsing. My system was SLOW, large pages filled with text updated at like 3fps when scrolling - almost impossible to browse a directory with a lot of files in it.

I knew this wasn't 'normal' behavior and now I know why. I've eliminated just about everything else that could be the cause. I'll use the .reg file to turn the setting off (thanks for that, btw!) and reboot. Then I'll let you guys know if it worked/helped! Fingers crossed!

Brink said:

Welcome to Ten Forums Rigs. I hope it helps.

Thank you!

YES! YES it did! My system is now back to it's old snappy self! I am beyond happy and relieved! I can't thank you guys enough for digging me out of a hole I put myself in!

So, for anyone else that wanders into that part of the Security settings with an older Core-series CPU, that setting is poison! I hope that MS either explains the setting in more detail, especially it's possible side-effects or fixes it so you can actually turn it off again. Or both.

I'm just happy to have my good ol' Black Omega back in working order. Time to go play some games the way they're meant to play! Thanks, again!

When I try to turn this on, it just immediately turns off. How do I get it to stay on? Nothing I do seems to make it stay on. I turn it on and reboot and it's off! Any ideas? I have virtualization turned on in the BIOS. I can take photos of my BIOS if need be.