In this case, you will receive another error message that is followed by a '1605' installer error message. In most cases, you experience a setup failure in the Setup program that is associated with registering fonts.
The 1722 error message is a general installer error message that states that a system level failure has occurred.
After you successfully install and activate Microsoft Flight Simulator X, if you remove the game from the computer and then try to reinstall the game, the game does not install and you receive a '1722' error message.
