- 64-bit version for Microsoft Flight Simulator 2020, Prepar3D V4+ and X-Plane: Download 64-bit OnAir Client
- 32-bit version for FSX and Prepar3D V3 : Download 32-bit OnAir Client
Uninstall
To uninstall properly, follow the “Uninstall or remove apps and programs” section in this document :
https://support.microsoft.com/en-us/help/4028054/windows-10-repair-or-remove-programs
You don’t need to uninstall the 32 bits version before installing the 64 version, but you will not able to start the 2 version at the same time.