There are a few things you didn't mention that are listed here. I say try uninstalling the CC app and then running AE without it installed and see if it behaves.
What antivirus are you using?
Thanks the reply and the link. I have actually seen that and tried all the fixes mentioned but none seem to work. I also uninstalled Creative Cloud with the CC uninstaller which also didn't work.
My guess is it's either Adobe or Microsoft breaking something with an update as all 4 AE windows 10 machines bugged out at the same time where our mac machines are fine.
I might try uninstalling AE and reinstalling it next as I'm pretty much fresh out of ideas.
An update borking it seems right.
If you do need to uninstall/reinstall, don't forget to run the Adobe CC Cleaner tool between those two steps.