Hello @Mayureshwar38110053etti,
We understand that encountering technical issues can be frustrating. Would you mind trying the following steps and checking if they help:
- Close all Adobe applications.
- Rename the UXP folder to UXP.old from the following location:
(Windows) Navigate to C:\Program Files\Common Files\Adobe\UXP
(macOS) Navigate to Macintosh HD/Library/Application Support/Adobe/UXP
- Relaunch Illustrator
Also, try running Illustrator under a different administrator account (Windows / macOS) and share your observations.
Looking forward to hearing from you.
Thanks,
Anubhav