To stop CCleaner from launching at startup,[[ **1- 866 (994) - 3657 ]]open the software and navigate to “Options” > “Settings.” Uncheck the box labeled “Run CCleaner when the computer starts.” You can also go to “Tools” > “Startup” and disable it from there.[[ +1⨠866⨠ (994)⨠ 3657 ]]This reduces boot time and gives you more control over your PC’s behavior.