I had the same thing for a while. Restarted PC, logged out of MS store and XBOX app, restarted again, then logged back in and now I can launch the game. This is the kind of stupid frustrating stuff that shouldn’t happen for a title like this.
Same problem… Will try some of the above suggestions.
{UPDATE} Resolved by repairing MSFS App & rebooting PC.
Yes I just had to same error when trying to launch the sim, what fixed it was signing out of xbox app and doing a full pc reboot then signing back in to xbox app the launching the sim and it booted in fine.
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Solutions:
For me the update gaming services worked.
i get this all the time from dallas