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A. Stevens
A. Stevens, Computer Engineer
Category: Software
Satisfied Customers: 1557
Experience:  10+ years of Desktop, Laptop, and Server troubleshooting and support.
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How to overcome Error 721 when trying to load FSX

Customer Question

How to
overcome Error 721 when trying to load FSX
Submitted: 2 years ago.
Category: Software
Expert:  A. Stevens replied 2 years ago.
A. Stevens :

Hi, I am A. Stevens here to help with your question!

A. Stevens :

Could you tell what what version is your operating system? Windows 7, Windows 8?

A. Stevens :

The 1722 error message is a general installer error message that states that a system level failure has occurred. In most cases, you experience a setup failure in the Setup program that is associated with registering fonts.

Method 1:

Follow the link given: Check Compatibility


The Microsoft Flight Simulator Standard version does not seem to be compatible with Windows 8. Check the link


If the game is not compatible with the windows 8, I would like you to install the game in the compatibility mode and give this a try.

Install the game in Compatibility Mode:

Step 1: Right-click on the executable file used to install the program, and select “Properties" from the menu.

Step 2: Click the "Compatibility" tab.
Step 3: Check the box next to "Run This Program in Compatibility Mode For."

Choose "Windows 7 or 8” from the drop-down menu.

Step 4: Click "OK."

Step 5: Double-click the program's installation icon to install the program.


Method 2:
You may install the service pack one and service pack two for the Flight Simulator:

Service pack 1:


Service pack 2: