Hi Jimi,
Some of our Community members tried to uninstall the security update KB4074588 (OS Build 16299.248) to make the issue go away.
Let us know if this works for you. We're here in case you need more help.
Tried doing this, type cover still unrecognized.
Probably should consider more practical solutions. What is a good bt kb solution that is portable for the surface, or a better machine replacement for the sp4?