Download the CCleaner from here   To activate the key: Start the program Go to the "Options", click "About" and then "Register" Enter your key to activate the full version of the program      

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Region free

Windows
CCleaner will run on any PC running Microsoft Windows XP, Mac 10.6 or later. 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)
Mac 10.6 to 10.11 64-bit 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.