This is the same for me. Been playing for years on the same account - reinstalled windows on a new machine yesterday - log into MS Store and Launcher using the same username as I have alsways done. Comes up with the error "the accounts in the launcher and microsoft store do not match" - will only let me proceed to the demo version.
Tried a different machine, same error.
*Update - I have fixed this. It turns out my son had changed the launcher account details at some point. Have logged into the launcher on the correct account and it worked.
This is the same for me. Been playing for years on the same account - reinstalled windows on a new machine yesterday - log into MS Store and Launcher using the same username as I have alsways done. Comes up with the error "the accounts in the launcher and microsoft store do not match" - will only let me proceed to the demo version.
Tried a different machine, same error.
*Update - I have fixed this. It turns out my son had changed the launcher account details at some point. Have logged into the launcher on the correct account and it worked.