Did you ever find an answer to this, having the exact same issue. Thanks
I cannot get my bluetooth headphones working with Win-10. I went into local-services and made certain all bluetooth options were "running". The problem is that when trying to change from speakers to headphones is that the "default" in grayed-out so it won't allow me to make the change. Also, in Settings-bluetooth devices it shows them as "Paired" and they're not.
As usual, any help would be appreciated.