I cannot register Parallels Desktop.
Error: the registration process couldn't been completed
- Quit Parallels Desktop.
- In Finder go to Applications -> Utilities folder.
Start Terminal.app and execute next commands one by one (you may copy/paste the commands for better convenience):
sudo mv /Library/Preferences/Parallels /Library/Preferences/Parallels.old
(you will be prompted to enter Mac OS X administrator password. Please note you will not be able to see it on typing)
Start Parallels Desktop again and activate it.
- Restart Parallels Desktop.