@nounours18200 said in How to perform a Full backup of Opera:
So I assume that backuping "C:\Users\ordic\AppData\Local\Opera Software" is enough for a full restoration of Opera, which is just what I need.
No. Backing up "C:\Users\ordic\AppData\Roaming\Opera Software" is what you want to do. And, if you also want to back up cache, back up "C:\Users\ordic\AppData\Local\Opera Software".