Version 5.66 is an older build. To ensure the best compatibility with modern operating systems and the latest security patches, it is highly recommended to download the latest available version from the developer.
Sites offering free "full" or "cracked" versions of CCleaner Professional often package the software with dangerous malware, Trojans, or spyware.
Removes junk files, temporary data, and broken registry keys.
Runs in the background to detect and clean junk files as they accumulate.
To protect your computer from malware and security risks, always follow these safety guidelines when looking for this software:
Download the installer directly from the official Piriform or CCleaner websites.