Piriform
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Help and Documentation

Licence Lookup

Lost product license key?
If you have lost your CCleaner Professional license key. Then you can use this tool to retrieve them.

Quick Tour

Quick Tour
New to CCleaner? Take the Quick Tour to rapidly turn you into a professional CCleaner user!

FAQ

Frequently Asked Questions (FAQ)
View the questions users most frequently ask about CCleaner. We recommend you read this before looking in the other sections for help.

Documentation

Documentation
A full set of detailed documentation is available at piriform.com/docs. You'll find how-to's, tips and tricks, and technical information for power users.

Piriform Forum

Community Forum
Or, join our community forums at forum.piriform.com to chat with fellow users and get answers to your questions.

Product News

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