Adobe Illustrator 2021 quits when opening (macOS Big Sur V 11.4)

Did this happen after some event like updating to Big Sur? DO you have any plug ins?

Reset Prefs Thoroughly (Mac)

• Quit Your Adobe App (100% you must do this)
• Finder >> Go (hold down option to show hidden) >> library 
• Preferences >> Adobe  >> (Program Name) rename to (Program Name) .old
• Library- >> Caches >> com.(Program Name) rename to (Program Name) .old
• Library >> Application Support >> Adobe >> (Program Name) rename to (Program Name) .old

OOBE RESET MAC

• Quit the Creative Cloud desktop app  (100% you must do this)
• /Users/<user folder>/Library/Application Support/Adobe/OOBE
• The \Users\<user folder>\Library\ is hidden by default for macOS 10.7 and above. See Access hidden user library files | Mac OS 10.7 and later for instructions to access it.
• Delete all the files within the OOBE folder, but do not delete the folder itself.
• Restart the computer and launch the Creative Cloud desktop app again.
• Delete all the files within the OOBE folder, but do not delete the folder itself.
• Restart the computer and launch the Creative Cloud desktop app again.

Hi there,

Sorry to hear about your experience. Do you see this behavior while opening a specific document?

I'd request you to try the suggestions given on this community post(https://community.adobe.com/t5/illustrator/resolve-slow-performance-and-unexpected-behaviors-in-illustrator/td-p/11561981) & let us know if they help with the crash issues. Looking forward to your response.

Regards,

Ashutosh

Hi, sorry about that

I don’t have a solution, but maybe if you Install an older version of Illustrator from the CC app. Go to the creative cloud app and click on the 3 dots next to Illustrator app to see more options and select other versions

you can install a previous version of Illustrator and maybe that will work, sometimes there are bugs and you have to update the system

Let me know if that works