MS conspires against us all. The KB4549951 installed itself May 14th behind my back and will not uninstall using History.
Also.. The JetComp tool refuses to "compact this version of database". I've tried every available option. I really need to be able to use this tool but Not a clue how to proceed.

My only option is to dig the dome computer out of it's case and swap OS disks to revert to something older.

I'm getting tired of having to be watching my back every night and day from half-baked Windows releases. I'm on the slow boat update tree which is not enough and am considering blocking the MS update servers as a virus.

Painful for me because I setup the Dome electronics for protection from heat and such rather than easy access hands-on.