If you install it, uncheck the "Active Monitoring" feature in the settings. It likes to run in the background, which defeats the purpose of saving resources. Use it strictly as a portable tool for deep cleans, but for daily maintenance, Windows 11 handles the heavy lifting just fine.
Furthermore, CCleaner’s free version frequently nags users to upgrade to the paid version, which includes “real-time monitoring” and “automatic updates.” These notifications can feel aggressive, and some privacy advocates question what data the tool itself may collect about your cleaning habits. ccleaner windows 11
Microsoft has significantly improved Windows 11’s native maintenance capabilities. In many cases, you no longer need a third-party tool. If you install it, uncheck the "Active Monitoring"