For my case, I met such issue on my working laptop, and it's with Forcepoint installed.
I've disabled all the services and startup items of Forcepoint in the begining.
But still crashing explorer, exactly the same phenomenon with floor #7.
I was blocked by password when trying to uninstall Forcepoint.
And our IT guy won't give me the password for sure.
So I tried to boot into PE, then remove all the Forcepoint drivers:
And also removed the DLL files by Forcepoint in System32 folder:
Then issue solved, fenses is working properly now.
This post is just for your info and reference.