Key Generator Microsoft Flight Simulator X M Getting A Message From Genuine Microsoft Software Which Says?

M getting a message from genuine microsoft software which says? - key generator microsoft flight simulator x

"This copy of Windows did not pass genuine validation.
The product key found on the computer was not assigned by Microsoft.
The Windows product key installed on this computer, not assigned by Microsoft. The key is fake, and it is likely caused by a non-sanctioned key generator. "What can I do? Help me out!