How to calculate a "fuzzy hash" for a program

Hello everyone, I'm currently trying to automatically calculate a fuzzy hash for a program using the Windows API.<br><br>The fuzzy hash should be a hash that does not calculate a value based on the program itself, but on the program that is used to run the program.<br><br>So if the same program is run with different versions of the program, it will get the same hash.<br><br>I've tried comparing Windows API functions used by the program, but that hasn't worked yet.<br><br>Does anyone have any ideas how I can calculate such a fuzzy hash?<br><br>Thank you for your help. Have a nice day!