How to replace MacBook 2015 12 inch spacebar

Okay I just did this. You have to separate the white thing under the spacebar from the black part of the key. Place that back in the keyboard first (make sure it is correct with the little white dots face-down and pointing to the bottom). Then once that is on you can black the black bar on top.

It is covered under warranty.

"Here's what finally worked for me to reattach my 2016 Macbook space bar after removing it to clean: https://www.youtube.com/watch?v=qCrF9Cdn.... You basically cut the white lever in half lengthwise and then reattach just half of it to the key and keyboard. (The half that has the non-symmetrical holes attaches to the single pins side of the key.)

My space bar was sticky but not stuck, and I tried to reattach it for over 3 hours using josephpgrendon's directions, but could never get the lever to stick to the keyboard, even though all the little pegs were intact. I thought it clicked into place several times and put the black key on top, but that just made the black key and the white lever connect; the assembly wouldn't attach to the keyboard.

I didn't really want to cut the intact lever but I definitely didn't have time for the ~3 hour visit to the Apple store, so I did it. Now it works better than it did before I cleaned the key, but not at 100% - the space bar still occasionally misses when I don't hit it square."

dont be stupid and remove keys form ur keyboard just tap gently from the back side /under the space bar or whichever key is facing issues and it will work like before

Thanksfor thisinformation.Ihavethe sameproblem. Ifoundavideo onhow toremove thespace bar, but itdidn't showhow toputit back, so I broke thoselittle tabs on the white piece andamgoing totheApple Store to get it fixed,

"https://support.apple.com/en-us/HT205662

This article shows a great way to clean your keyboard out without taking off the keys. I had a stuck key on my computer, and just blowing hard with my own mouth, using the link above, helped it get working again!"