CCleaner is the number-one tool for cleaning your Windows PC. It protects your privacy online and makes your computer faster and more secure. Easy to use and a small, fast download. Piriform releases regular updates for CCleaner with many improvements.
How to Activate ?
Download and install the Latest Free Version of CCleaner

Turn off your Internet Connection (This is important,otherwise keys will not work)
Launch CCleaner
Go to Options > About and Click Upgrade to PRO button
Enter your name and a serial key given below
Click Register and You’re Done

Serial Keys
C2YW-IAHG-ZU62-INZQ-WZPC
C2YW-2BAM-ADC2-89RV-YZPC
C2YW-XFCX-ABIG-GZD4-8ZPC
C2YW-XK32-GBVV-N3BH-2ZPC
C2YW-JKW5-KK79-XHR2-4ZPC
C2YW-QTRT-ZVCG-PQDK-CZPC
C2YW-GP33-TPIU-BGM8-AZPC
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