Solved Sfc /scannow Broken

Version 22H2 Build 22621.1413

Today a random crash caused me to look at my system files. A random crash on my PC is more than rare, it has never happened before, so I thought I would check Windows.
Anyway, cut a long story short, sfc /scannow does not work. Entering the command comes back with...
"Windows Resource Protection could not start the repair service."
I followed the advice on various web resources, and they seem to mostly focus on Windows Modules Installer. But that's running just fine! I have tried stopping and restarting it, rebooting, nothing works.
But there seems to be something wrong with Windows Security. It's just a blank screen so I am thinking this is something to do with Windows Security.
Anyone any advice here?

Ah, progress, I followed this advice and managed to get the security page back up.

Ah! And in fact the same repair has fixed sfc /scannow !!

Thank you for your help everyone!!
(I thought I would leave the post here so anyone who has the same problem has the link to the Microsoft help that fixed it )

Pocah said:

(I thought I would leave the post here so anyone who has the same problem has the link to the Microsoft help that fixed it )

Click to expand...

good idea. You should also mark this thread as 'Solved' with the button at top right of your first post.