13" macbook air keyboard

Hi Korlopp,

Welcome to the Apple Community.

Wondering if the space-bar is working ok in the on-screen "keyboard viewer".

Click the black apple in top menu bar > System Preferences > Keyboard > Input sources

or

Article from Apple Support:

"Use the Keyboard Viewer on Mac":

https://support.apple.com/en-au/guide/mac-help/mchlp1015/mac

(Might also be helpful temporarily, while troubleshooting)

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You may wasn't to check whether you have accidentally triggered a setting ...

Try: Click the black apple in top menu bar >

Then : System Preferences > Accessibility > Keyboard > Hardware ...... ( and / or (Accessibility keyboard)

or

"Use the Accessibility Keyboard on Mac":

https://support.apple.com/en-au/guide/mac-help/mchlc74c1c9f/11.0/mac/11.0

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Apple support article:

"If your Mac doesn’t respond to key presses"

(NB: scroll to "If other keys don’t work")

https://support.apple.com/en-au/guide/mac-help/mchlp1240/mac

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Else

You might want to try resetting the SMC (System Management Controller)

How to reset the SMC of your Mac

https://support.apple.com/en-au/HT201295

Test to see if the space-bar is working again.

(If not, try restarting your Mac .. and try space-bar again.)

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Hope something here helps you to regain control of the space-bar :-)