Ever wondered why MSFS crashes on PC for an unknown reason? It could be because the Gaming Services application has had an update, which closes MSFS when it's done. Why, being a Microsoft product, Gaming Services updates when you are running a Microsoft game is completely bonkers in my mind...
Sim update 15 is now available for Microsoft Flight Simulator after being delayed a short while.
https://forums.flightsimulator.com/t/release-notes-sim-update-15-1-37-18-0-available-now/642215