The Arduino Pro Micro Hookup Guide is badly out of date. It says "It should be a folder named ‘SFE32U4_Drivers’." but the repo has changed since and there is no folder with that name. I found an inf online called "sparkfun.inf" but when I use that he says "the folder you specified doesn't contain a compatible software driver for your device. if the folder contains a driver, make sure it is designed to work with Windows for x64-based systems".
Has anyone a working x64 Pro Micro Driver Inf?
https://learn.sparkfun.com/tutorials/pr ... ng-windows