Mute Button on the Touch Bar Missing

UserB1999 Said:

"Should I reinstall the software?"

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Try it. Be certain you back up your Mac prior to the install.

Try reinstalling the MacOS. It has worked for me. If you have have had this same issue, then I'm not alone. Let me know how the reinstall goes.

-TheLittles

Occurred After the Big Sur Update:

Having a chat, the disappearance of that Touch Bar's items, has been reported "a few times". I tried creating a new user, resetting SMC and NVRAM, and reinstalling the macOS - nothing worked.

I Plan to Update Once More:

I have it back, now, after the update. Customize the Touch Bar on Mac - Apple Support. Plan to backup, then upgrade my Mac tonight. Don't know if this issue of it disappearing will occur once more - expect a reply soon.

UserN1999 Said:

“Should I reinstall the software?“

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Reinstalling the macOS:

If you cannot get it to show up, then try reinstalling the macOS. Nothing would be deleted. It's just that items that have become corrupted or deleted, would be replaced or reinstalled back to where they should be. Go Here: How to reinstall macOS from macOS Recovery - Apple Support. Just note that it never worked for me though, hence this being unsolved.

Time Machine backup:

Important: Prior to the reinstall, create a Time Machine backup of your Mac, so that you can have something to restore your Mac from, should anything go wrong, performing the update.

UserN1999 Said:

”Hi, my entire Touch Bar has gone missing after the upgrade. Any suggestions, pls? “

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Any Backups?

My Mute button never came back. So, I restored from a Time Machine Backup that I created prior to this, and performed another upgrade. It all came back after another attempted upgrade. So, ....

1. Create: a Backup of your Mac
2. Restore: from a Backup prior to all of this
3. Migrate: it all back from the Backup you made in step 1, through use of migration assistant
4. Upgrade: once more
5. See if it then shows

11.2.3 Update Gives the Issue Too:

I've updated my Mac, and now the Mute button has gone missing once more. Troubleshot it the same way, with no success. So, I went and customized the Touch Bar to get the Mute button back.

Has this occurred to anyone else out there?