Lots of info on official MS forums and others [google it]
It stops touch screen from working.
Stops sound from working.
Deletes restore points.
My tablet has just installed this and ruined the tablet.
A search on MS reveals DO NOT INSTALL/HIDE it stops the touch screen working etc.
A engineer has just spent 90 minutes on it remotely with no success despite all the chip updates from INTEL.
Cannot even find where the update went.