If you entered the incorrect Microsoft account credentials, simply follow these steps to swap accounts.
- Launch Microsoft Flight Simulator
- Click on your icon/gamertag in the top right-hand side corner of the screen
- Click on Sign out
- Exit Microsoft Flight Simulator
- Clear your browser's cache and cookies to delete website settings such as usernames and passwords.
- You will be prompted to enter your Microsoft Account credential the next time your launch Microsoft Flight Simulator.
See also: All versions - Xbox Live Sign-In issues