This suddenly appeared on my system this morning after an apparent automatic update.
Incidentally, there were other new graphics issues this morning which cleared up after I rebooted my computer.
Windows Security says there are actions recommended. On the Windows Security home screen, under Device Security it says "Memory Integrity is off. Your device may be vulnerable." There is a button labeled "Go to settings" which I clicked. It takes me to the Core Isolation screen, where there is a yellow "!" triangle and a message saying "Memory Integrity is off. Your device may be vulnerable." There is a toggle, currently Off. I turned it on. At the "Do you want this app to make changes" prompt, I said Yes. It now says "Resolve any driver incompatibilities, and try again." There is a Scan Again button which I clicked. I get a notification telling me "Memory Integrity can't be turned on. Try resolving any incompatibilities with your drivers." Back on the Core Isolation screen, there is a blue clickable link "Review incompatible drivers." I clicked on that link, and it takes me to a screen titled "Review incompatible drivers." But there are no incompatible drivers shown on that page to be reviewed.
So I am at a dead end. Microsoft needs to fix this problem! Meanwhile, what should I do?