Since a few days I have this problem in continuous loop. I first uninstall the “gaming service” and reinstall it - but improves nothing. I uninstall MSFS and reinstall. Then it works exactly 1 x. At the next start I end up again in the MS Store instead of the Sim. Really very annoying, especially because you don’t know why this happens at all and because large downloads are necessary every time…
Can anyone help?