How to register and activate CCleaner Professional

This article contains a comprehensive guide to registering your copy of CCleaner Professional or CCleaner Professional Plus for Windows or CCleaner Professional for Mac, and also includes solutions to problems that some customers may have when registering.

Do I need to register my CCleaner Professional?

Yes!  In order to use the paid features of CCleaner Professional, including automatic updates and Health Check, it is important that you have it registered with a valid, active license key.

If you have recently purchased CCleaner Professional and your copy of CCleaner is still showing as "free" or "unregistered", or if you are still receiving notifications that you have expired then you will need to register CCleaner with the information from your Cleverbridge order confirmation email.

You may also have received a courtesy email from us to remind you that a license key that you have purchased has not yet been activated.

What do I need to have in order to register?

You first need CCleaner installed on your computer while it is connected to the internet.  If you are already using CCleaner 5.46 or higher for Windows, or CCleaner 1.16 or higher for Mac then you do not need to download it again - after you have registered CCleaner and restarted it should automatically update itself to the latest version.

If you do not have CCleaner on your computer yet you can click on the following links to download CCleaner Professional for Windows or to download CCleaner Professional for Mac.

If you are having difficulties successfully downloading CCleaner for Windows, there is a help guide here: How do I download CCleaner? 

If you are having difficulties successfully downloading CCleaner for Mac, there is a help guide here: How do I download CCleaner for Mac? 

You will also need your registration information - your name and your license key.  You would have received this in your order confirmation email from Cleverbridge after you purchased, or in a registration reminder email from us.  If you do not have either of these and are unable to locate your registration information, you can retrieve it instantly using our license lookup system.

Where do I enter my license key? (CCleaner for Windows)

If you have installed CCleaner Professional from one of the links above, or from the download link in your order confirmation email, it should pop up with a registration box inviting you to enter your details. If the registration box does not appear and you cannot find where to enter your license information, go to Options > About in CCleaner and click Register or License Information to enter your information.

For example, if you are entering a new license key into a copy of CCleaner Professional that has already been registered, you will see your old license information in the "License Information" screen, which you can update by clicking on the Register New Key link.

Screenshot of CCleaner license information screen

If you are upgrading your free CCleaner to CCleaner Professional, you will need to go to Options > About > Upgrade to Pro and it should look something like this: 

Screenshot of CCleaner registration screen

If your are using a more recent version of CCleaner, you may also be asked to enter your name and license key separately. Be careful when copying and pasting your license key that you don't accidentally include any spaces before or after the key.  It should look something like this:

Screenshot of licence key entry window

... and not like this:

Screenshot of licence key entry window

Where do I enter my license key? (CCleaner Professional for Mac)

You can register your license into CCleaner Professional for Mac using the following steps:

  1. Open CCleaner > click Options > About
  2. Click Register or Upgrade to Pro

Otherwise if a license is already registered in the CCleaner app but you need to activate a new replacement license key, you can do so as follows:

  1. Open CCleaner > click Options > About
  2. Double-click on the line of text which says Registered to: [Your Name]

When the registration dialog opens, enter your CCleaner Professional or CCleaner Professional Plus registration information from your purchase confirmation email.

If you get an error saying that your license key is not valid

In general, registration problems are a result of a small typing error when inputting your details into the registration dialog.  It is usually easier to use copy and paste (Ctrl-C and Ctrl-V on Windows, Cmd-C and Cmd-V on a Mac) to enter the details from your purchase confirmation email to help avoid errors when typing.

If you do type your information by hand, it is worth noting:

  • Our keys don't contain the number 1 (one)
  • If you've typed a number one, try changing this to the capital letter i
  • The Name field should contain your registration name exactly as it appears in your order confirmation - your email address won't work here.

You may also have problems registering if:

As mentioned above, if you have lost your CCleaner registration information, or otherwise need to check the status of your licenses, expiry dates or get new download links to install on other computers you can do so using our license lookup system.

"Failed to save registration key" Error

If you get this message, this usually means that you are not running CCleaner with the correct permissions.

To resolve this issue in Windows, please run CCleaner as the Administrator. To do this:

  1. Right-click on the CCleaner icon
  2. Select Run as Administrator
  3. Now re-enter your registration details in the pop-up

To resolve this issue in macOS, please run CCleaner as sudo. To do this:

  1. Open Applications > Utilities > Terminal
  2. Type:
    • sudo "/Applications/CCleaner.app/Contents/MacOS/CCleaner"
  3. Press Enter/Return > type your Mac OS X password (you will not see any text being input when entering this)
  4. Press Enter/Return again and CCleaner will open as Sudo.