Do you need help for a specific email address, or
Your license key is a unique 25-character code (formatted as XXXX-XXXX-XXXX-XXXX-XXXX ) [11, 14]. You can typically find it in the following places: Ccleaner pro license key
Activating your license transforms the free version into the Professional edition instantly. On Windows: and navigate to Options > About [5.8]. Click on Upgrade to Pro or Register/Enter Key [5.8, 5.14]. Do you need help for a specific email
This usually happens if you have a new replacement key or if the license was used on more devices than allowed [5.6]. Click on Upgrade to Pro or Register/Enter Key [5
If you've lost your email, you can use the official CCleaner License Lookup to retrieve it using your registered email address [5.3, 5.6].
To move your license to a new computer, simply install the free version on the new device and enter your existing key [5.16].
Enter your (exactly as it appears in your confirmation email) and your License Key [5.4, 5.8, 5.14].