You're reading my mind. I didn't take my own advice ignoring... I think you know what I mean. I'm about to run 2.5.6 with and without disabling upfc.exe and then go from there. As we speak I've just installed the latest bleeding edge Windows 10 18309.1000 in a vm and I'll try to break it. If I can't break that I'll run 1803 in a vm and install KB4471324. Just leave 2.5.6 installed and don't update for now. Revert to script 2.5.5. I should have this all checked out by tomorrow and I'll be able to tell everybody what the hell happened.