Hi everyone,
I am experiencing the same issue and wanted to provide an update on my situation. Initially, I was dealing with exception code 0xc0000409 whenever I tried to launch the app.
I have already tried all common troubleshooting steps, including uninstalling and reinstalling the Gaming Services, multiple reboots, and reconnecting my account, but nothing resolved the issue. Following the suggested steps, I then performed a Windows In-place Upgrade. Before this In-place Upgrade, some games would still launch despite the error, but since performing the In-place Upgrade, I am consistently receiving error code 0x87E5003F every time I try to launch my games.
Could you please let me know if there are any updates or news regarding this issue? It seems the situation has unfortunately deteriorated after the In-place Upgrade.
Thanks in advance for any information.