Recent versions may have third-party analytics enabled by default in the Data\usercfg.ini file; you can manually opt-out in the settings.
Always download from the official CCleaner builds page or the Microsoft Store to ensure the file is safe and free from malware. CCleaner Pro Portable 6.04.10044Microsoft
Before using the Registry Cleaner tool, always allow the program to create a backup of your current registry settings in case you need to undo changes. CCleaner 6.24.11060 Portable - Registry tab hasn't moved Recent versions may have third-party analytics enabled by
Analyzes your PC to recommend quick fixes for privacy, space, and speed. CCleaner Pro Portable 6.04.10044Microsoft
Keeps your installed apps up to date to close security vulnerabilities.