1) One of the following:
a. X-Plane version 12 64 bit
b. X-Plane version 11 32/64 bit
c. X-Plane version 10 32/64 bit
d. X-Plane version 9 32/64 bit (later versions)
2) .NET Framework version 3.5 and 4.7.1+ with all updates applied (via Windows Update)
3) Windows 7/8/10/11 32/64 bit with all Windows Updates applied
4) Visual Studio 2017 C++ runtimes (provided with the software)