Microsoft Store still not working

[eng3]

I took ownership of Windows Apps to look inside.
Then used your script to fix it. My windows apps seem to run fine with the exception of the Microsoft Store itself.
When I try running it, nothing happens.
In Event Viewer (System), I do see "The server Microsoft.WindowsStore_22402.1401.4.0_x64__8wekyb3d8bbwe!App did not register with DCOM within the required timeout."

I tried add-appxpackage but it made no difference.

Any ideas?