Hi,
I used MasterCAMX4, I think, but that was nearly eight-ten years ago. At that time the business in which I worked and held the license were running 64bit Windows 7 PCs.
I believe the X4 was the last MasterCAM version that would run on 32bit machines.
Whether X5 can run on Win11, I just don't know. If you have a genuine license then ask MasterCAM....if you don't then best go silent....they do not take kindly to license violations.
Craig