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Delete key not working in some applications in Big Sur 11.6

In some applications, like Mail and messages, the delete key is not working. It is working in Safari. I've checked with an alternate keyboard and the problem persists. I tried a restart and that didn't do it either. Any suggestions?

Mac Pro

Posted on Oct 1, 2021 8:59 AM

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Question marked as Top-ranking reply

Posted on Oct 1, 2021 11:58 AM

Boot into Safe Mode according to Start up your Mac in safe mode - Apple Support and test to see if the problem persists. Reboot normally and test again.


NOTE: Safe Mode boot can take up to 3 - 5 minutes as it's doing the following; 

• Verifies your startup disk and attempts to repair directory issues, if needed

• Loads only required kernel extensions (prevents 3rd party kernel/extensions from loading)

• Prevents Startup Items and Login Items from opening automatically

• Disables user-installed fonts 

• Deletes font caches, kernel cache, and other system cache files


3 replies
Question marked as Top-ranking reply

Oct 1, 2021 11:58 AM in response to RobertMReed

Boot into Safe Mode according to Start up your Mac in safe mode - Apple Support and test to see if the problem persists. Reboot normally and test again.


NOTE: Safe Mode boot can take up to 3 - 5 minutes as it's doing the following; 

• Verifies your startup disk and attempts to repair directory issues, if needed

• Loads only required kernel extensions (prevents 3rd party kernel/extensions from loading)

• Prevents Startup Items and Login Items from opening automatically

• Disables user-installed fonts 

• Deletes font caches, kernel cache, and other system cache files


Delete key not working in some applications in Big Sur 11.6

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