Once you have purchased a key from the official store, follow these steps: Open . Go to Options > About . Click Upgrade to Pro or Register/License Information .
Would you like to know more about CCleaner or have specific questions about the Professional Edition features?
If you want a stable, secure experience, there are several ways to get a genuine key: 1. Official Purchase license key for ccleaner professional edition
is sufficient. It includes the core cleaning engine and privacy protection tools that made the software famous. Open Source Alternatives
If you’re looking for a way to speed up your PC without spending money, you can always use , which includes the core cleaning features without needing a license key. Once you have purchased a key from the
If your license key isn't working, check these common culprits:
Analyzes and fixes your PC’s performance in one click. Would you like to know more about CCleaner
Searching for free license keys for premium software like CCleaner Professional
Your personal data can be harvested by the "patch" software.