1. Open the License window.
On PC you can do so by going to menu and selecting “Help” followed by “License Information” and on Mac by going to “Capture One” menu item and selecting “License…”
On Mac you can access the license window in following fashion: "Capture One" menu item and select "License..."
2. In the License window, please click the button Deactivate.
3. In the next step you will need to confirm that you want to deactivate this computer by checking the box provided in the window. Once checked, the deactivate button will be enabled and become clickable. Clicking on this button will deactivate this computer and therefore free up one activation credit that can be used for activation of a different machine.