Activate CCleaner for Windows

To register and activate CCleaner Professional

This page describes how to register for CCleaner Professional.

This page also provides solutions to problems that may occur during the registration process.

Do I need to subscribe to my version of CCleaner Professional?

Yes. To use paid features of CCleaner Professional, such as the full version of Health Examination, you must register your product with a valid and active license key.

What do I need to register?

CCleaner must be installed on your computer and connected to the Internet. If you have CCleaner 5.
6 oder höher für Windows or CCleaner 1.16 or later for Mac, you do not need to download the software again. download the software again. When you register CCleaner and restart it, it will be automatically updated to the latest version.

Useful links:

If CCleaner is not installed on your computer:

- CCleaner Professional kaufen

If you have difficulties,, CCleaner for Windows download:
How to CCleaner download?

To register you need to enter your name and your license key. You will find the license key in the Bestsoftware email with your order confirmation or in the registration reminder email from us.

Where did you enter your license key? (CCleaner for Windows)
If you installed CCleaner Professional using the link above or the download link in your order confirmation email, you will usually see a registration popup when you start the program. Otherwise, go to Settings > About CCleaner, click Registration or License Information, and enter the details. If you previously registered for CCleaner Professional, the current license information is displayed on the [License Information] screen. To update, click Save New Key.

To upgrade from CCleaner Free to CCleaner Professional, select Options > About > Upgrade to Pro. The following dialog (or similar) is displayed.

If you are using a newer version of CCleaner, you may be prompted for your license key and name. When copying and pasting the license key, be careful not to copy the spaces before and after the key.

That's the right way to do it: