Hi All -
This is a known issue and MS is investigating this.
For the meantime, please do the following steps:
1- Go to Settings> Account> Sign in With a local account instead and follow the prompt to finish setting up your local account then sign out to your PC.
2- Sign in with your local account> Click Search bar, type Command Prompt> Right click Command Prompt and select "Run as Administrator"
3- Type this command and hit enter
net stop wuauserv
net stop bits
net stop cryptsvc
4- Disable your Anti Virus and do not close command prompt just yet
5- Type this command through command prompt again and hit enter
net start wuauserv
net start bits
net start cryptsvc
6- Go to Settings> Account> Sign in With a Microsoft account and follow the prompt to finish setting up your Microsoft Account.
7- Try again to launch your Microsoft Games.
Hope this helps.
Regards,
Meta.Cosmos