Hackers often embed malicious code like ransomware or spyware in cracked installers to steal personal data.

Navigate to > My Subscription (or click Insert License Key ). Enter your registration name and activation code. Click Activate to unlock the Professional features.

If you have a valid license key, follow these steps to activate it: Open the CCleaner application.

If you want to use CCleaner without the risks associated with cracked versions, consider these official options:

If you decide the Pro features—like automated cleaning and a software updater—are worth it, you can purchase a legitimate license key from the CCleaner Store to ensure your system stays secure. How to Activate a Legitimate License