- Download and run the Avast Cleanup Premium setup file.
- Run the downloaded setup file and click Yes in the User Account Control dialog.
- Select the language you want to use, then click OK.
- Review the file's location, then click Next.
- Click Install and then Finish.
- When the program is successfully installed, the Cleanup Premium interface opens.
- Open the Avast Cleanup Premium menu.
- Click on Subscription.
- Enter the provided activation code.