Illustrator will start but is completely unresponsive.

Hi ​@Giddy_Essence2115\,

Thanks for reaching out, and I’m sorry to hear Illustrator has become unusable on your system. Could you please try rebooting your Mac and then, before launching any other applications, open Illustrator first and test the issue again? Also, please manually reset Illustrator preferences by following the steps shown in this video and let us know if it helps:

https://www.youtube.com/watch?v=nfO7Ixi28oM&t=24s

If the issue still persists, please try the troubleshooting steps mentioned in this HelpX article:

https://helpx.adobe.com/illustrator/kb/fix-crash-on-launch-issues.html?linkId=100000357094815

Additionally, please test the issue in a new macOS administrator account or in Safe Mode and share your observations:

https://support.apple.com/en-in/guide/mac-help/mh21245/mac
https://support.apple.com/en-in/guide/mac-help/mh15191/mac

Please let us know how it goes after trying these steps so we can continue investigating this further if needed.

Best,
Abhishek