I seemed to have a similar issue to Buggs (9th Jan post) I can’t connect the mount via POTH. The dome connects OK.
I can connect the mount via the EQASCOM. I can also still connect the mount via SGPro along with the dome. Slaving the dome via SGPro results in the dome opening and scope becoming out of sync in some positions. It has been running fine with both connected and slaving using POTH.
I have reinstalled ASCOM and it made no difference.
I am not using Windows 10, my laptop is running windows 8.1. I see no mention of the offending patch number KD4056892 although there were 2 critical patched downloaded on 19 Jan.