: If Illustrator is unresponsive, use Cmd+Opt+Esc (Mac) or Ctrl+Alt+Delete (Windows) to force quit the application, then restart both the app and your computer.
Sometimes your user profile has system-level permission or registry errors (Windows) or LaunchAgents (macOS) that interfere.
Here is a comprehensive guide to understanding why this error happens and how to fix it permanently. Root Causes of the [parm] Error : If Illustrator is unresponsive, use Cmd+Opt+Esc (Mac)
The key to solving the PARM error is a systematic approach. Start with the simplest, least disruptive methods and move down the list if the problem persists.
Here are some additional troubleshooting steps you can take: Root Causes of the [parm] Error The key
Using the Adobe Creative Cloud Cleaner Tool is essential because remnants of plug-ins and preferences survive a normal uninstall.
Insufficient permission or storage space on your designated scratch disks. Step-by-Step Solutions to Fix the Error Insufficient permission or storage space on your designated
The PARM error often relates to the rendering engine failing when reading a specific font.