I have exactly the same problem. For me, a Windows reinstallation has unfortunately brought nothing.
I fancy that the first time the error occurred after the TOGA, EDDL Justsim or FSDG Sharm El-Scheikh update. Also possible that it has to do with the AS V4 update, this was also updated during this time by me.
With me, unfortunately, no repair attempts, it does not work with and without addons. It is to despair.
regards Steffen Herzlieb