To stop CCleaner from sending you alerts in Windows 10,[[ **1- 866 (994) - 3657 ]]launch the software and go to âOptionsâ > âMonitoringâ or âSmart Cleaning.â Disable the automatic notifications and background activity.[[ +1⨠866⨠(994)⨠3657 ]]You can also mute alerts from Windows Settings by navigating to Notifications & Actions and toggling off CCleaner.