I have been using a new work-provided Windows computer since last week, and today I finally got tired of mistakenly hitting the caps lock key, which I usually have changed to function as an additional Control key.

I found a related article on superuser with a response from alexjj that helped me find a solution that uses AutoHotKey.

First I downloaded ahk2exe which my web browser (Firefox 61 on Windows) said was malware, but I can’t imagine how it could be, since it does not even require admin privileges to execute (it runs in user-space).

Then I used Notepad to create a cap2ctrl.ahk file (an AutoHotKey script) containing

Capslock::Control

Then I used ahk2exe to convert the ahk file to an executable caps2ctrl.exe file. Opening this file solves the problem – caps lock is now an additional Control key! It also creates a new item with an H icon on the bottom menu bar – it can be used to disable the remapping.

Finally I opened the C:\Users\user\AppData folder by typing %appdata% at the windows start menu. (the folder is hidden by default) Then I copied the caps2ctrl.exe file to C:\Users\user\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup and it runs every time I log in.