Location is greyed out, i cannot remove internet explorer 11 addon after virus removal

That seems to be a false trail, then. I'll look for another registry key that looks especially important connected with {BFA794E4-F964-4FDB-90F6-51056BFE4B44}, but I doubt this is where the problem lies. I'll bet your registry keys for this are just fine.

Now, I've gone through the registry & found other keys of interest, but I think your registry probably is fine with this. Most of them seem to record which apps will have access to one's location: allow, prompt, or deny. There is another Class ID tied to the first, namely "{6129C4B2-9397-4E58-BCD8-CED219D0CD33}"...

...If you have that & this one, I'll be fully satisfied your registry is fine with this...

Get to them directly by clicking the ">" to left of each address portion, & finally click the last portion. I think the problem will be that you have missing files. For a starter, do you have...?...

C:\Windows\System32\LocationPermissions.dll

...& an obvious bunch of others around it...

After putting a check mark on Geolocation in System Configuration, the "Enable All" is greyed out...

and when I click on Apply, it unchecks itself ....

In Services, when I click on Apply after setting it to Manual, it gives me this...

The three (3) SensorPermissionState are the same... It looks exactly like yours....

OK. They both said to run the Safety Scanner. Go back & click for that, if you haven't already. After that, run a full Defender scan, it said. Not bad.

I'm overall happy with Defender's performance. My only regret is that it let these two in in the first place. Why did they get through the Real-Time scanner?