Ctrl + C (Copy) not working properly in Adobe Illustrator

Ctrl + C (Copy) not working properly in Adobe Illustrator — works intermittently

Hi everyone, I’m looking for help because I’ve already exhausted the basic troubleshooting steps.

Problem:
The Copy function (Ctrl + C) in Adobe Illustrator works inconsistently — sometimes it copies, sometimes it doesn’t. In many cases I have to press Copy multiple times before it actually works. Consequently, Paste also fails because the object never gets copied to the clipboard.

Important details:

• Objects are definitely selected (Selection Tool)

• Layers are not locked

• Isolation Mode is off

• Files are not read-only

• Not related to a specific object