Tolrem

https://forum.step-project.com/topic/12353-just-posted-this-on-windows-10-insider-feedback-hub-please-go-upvote/ Yep, the insider build is your culprit, we haven't found a workaround yet, and I've rolled back to latest non insider build so I could play Skyrim with MO and finish it 100% before the fall update comes out.

just curious, what Windows build were you using ?

Same issue here with the last insider build (if I put the mods directly in skyrim folder they work fine, but they don't work from MO anymore, so there's an issue with the VFS / hook). I've read the release notes to see if something in particular could have caused this but nothing stands out. Still trying to find if some new security features prevent the hook from working, I've been at it for hours. We have to find a solution, otherwise people who use MO will have a bad surprise when the fall update for Windows 10 comes out.