If you have a legitimate license key from a purchase, follow these steps to unlock Professional features:

: Get the installer from the official CCleaner Download Center .

Instead of using risky third-party cracks, you can follow these official and safe methods to use . 1. Official Download & Installation

While CCleaner is a legitimate system optimization tool, you should avoid "cracked" versions, "license key lists," or unofficial "full version" downloads. These files are frequently used as bait to distribute .

: Run the .exe file. During setup, you can customize shortcuts and start menu options.

To ensure your system stays secure, always download the software directly from the manufacturer.