: Automatically analyzes and tunes up your PC performance.
Open CCleaner and click on in the bottom-left corner. Select My Subscription or Subscriptions . Click Enter license key or find the Activation Code box. Paste your key and click Activate . 3. Using Professional Features : Automatically analyzes and tunes up your PC performance
The safest way to use CCleaner is through the official CCleaner website . : Automatically analyzes and tunes up your PC performance
CCleaner Professional offers more advanced tools than the Free version, such as: : Automatically analyzes and tunes up your PC performance