So after months of not one problem with msfs,
today trying to start up msfs 2020 I cant get it to load, message come up to say it cant be found on pc, tried to start it through ms store but still no joy
please help 
Done all the normal checks and repairs / restarts still nothing
Can you confirm that the 80-90 gb of game files are on your PC in a specified location/folder of which you can open?