I have this problem since 2021. Refuses to update for no reason this, refuses to update for now reasons that, refuses to download for no reasons this, refuses download or install for no reaons that.
Refuses to launch because of online-DRM-crap this, refuses to launch because of DRM or login-problems that, refused to update gaming-services-whatot this, cannot launch because gaming services must be updated blah blah blah blah blah, and XBox services must be updated (but XBox service update failed with error e43545645647-whatever-code for the 500st time and no internet solution helped… BAAAAAAH!!!)
This went on since 2021, until I almost become completely insane and thought about also giving up on computers completely to live in the woods with a loincloth and a dull spear and hunt honey badgers for food…
I had given up completely on the sim, but in 2022 the Fenix Airbus released which rekindled the old enthusiasm for aviation IMMEDIATELY and for the Fenix I even bought the sim on Steam for the Fenix 
And buying the sim on Steam immediately solved all imaginable hassle and eternal problems and launch-problems and all other imaginable DRM-hassle.
Simply buy the sim on DRM-free Steam!
Steam ----> all problems solved, since 2022.