Go to the official website of the ccleaner pro keys.
Download the free version of the software.
One downloaded, now run the software and then save the file
Now right-click on the file and then run the csetup.exe file.
Then click “open” on the dialogue box.
Now the installation wizard will pop up on the screen. Click on “Next”.
Now select some options as per your choice and then click on “Next”.
Uncheck both the options available on the screen and then click on “Install”.
Wait till the installation process gets over.
Click on “Finish”. And your software is successfully installed on your device.