SYSTEM REQUIREMENTS + ACTIVATION INSTRUCTIONS: EnglishGo to ccleaner.com via your web browser. Download the free version of CCleaner. Once installed, open the app, go to Options - About. Click on Upgrade to Pro. When prompted, enter the provided activation code and click Register. When prompted, please leave the Name field blank.softwareRest of the worldRoW (Rest of World)Windows
CCleaner will run on any PC running Microsoft Windows XP. If you're running one of the following operating systems, you're fine to run CCleaner: Windows 10 (all editions, including 64-bit) Windows 8 (all editions, including 64-bit) Windows 7 (all editions, including 64-bit) Windows Vista (all editions, including 64-bit) Windows XP (all editions, including 64-bit) Windows 2003, 2008 and 2012 Server (all editions) Since CCleaner is a small, quick program there are no minimum memory or hard drive requirements. Note 1: For Windows NT4, ME and 98, we recommend CCleaner Version 2.  For 2000 we recommend Version 3. Note 2: CCleaner does not currently support Linux.