How to Unregister Photoshop

1. Open Adobe Photoshop.
2. Click the 'Help' menu and select 'Deactivate.'
3. Choose whether or not you want to erase your serial number from the computer. If you are getting rid or giving away your computer, this may be the ideal thing to do. If you are keeping your computer, there is no need to erase it and may help you out if you choose to reinstall Photoshop at a later time.
4. Click the 'Deactivate' button to unregister Photoshop from the computer.