macrumors member
Original poster
Dec 7, 2011
Every Google search I've done, no matter how differently I try to word it, always comes up with the same/similar results: Disable Caps Lock Key by changing its settings through SYSTEM PREFERENCES> KEYBOARD> MODIFIER KEYS.

Changing the setting this way will typically work as long as I don't close my Mac. If I do put the system to sleep and come back, caps lock is always re-enabled.

I was able to find a way to disable the caps lock key permanently through terminal back in 2013, long prior to the OS X > MacOS rebrand. Is there still a way to accomplish this through terminal, or do I have to change the setting each time I open my computer?

Thanks in advance for any tips, help, & for pointing me in the right direction.

*Running MacOS Sierra 10.12.3 on 2016 MBPro (Non-Touchbar)


macrumors Core
Feb 20, 2009
I disabled CapsLock in the keyboard pref pane (set it to "no action").
Never had a problem since.

What it is about your Mac that makes it different from all the rest…? ;)


macrumors member
Apr 4, 2016
It's a bug courtesy of Sierra. I've set CAPS LOCK to "No Action" for as long as the option has been around. It has always worked and it has always remained set to "No Action" despite rebooting, shut downs, NVRAM resets, throwing the Mac Pro through double-paned windows, etc. There's something screwy with all modifier keys since Sierra, they seem to only engage about 75% of the time. Apple's unmatched attention to detail and stellar programming now has it resetting to default constantly through four iterations of Sierra (10.12 - 10.12.3).

It's been noticed on Apple forums but unfortunately that forum is about as helpful as getting kicked in the balls.

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