Malwarebytes is available for users of any modern Windows client to download and install at no cost to them. You can also purchase an annual subscription, which entitles you to take advantage of real-time protection, scan/update scheduling, and access policies.

If no license has been installed into the product, the blue Menu Bar at the top of the screen will show an Activate License link and an Upgrade Now button. When clicked, Upgrade Now takes the user to a screen which shows the advantages of purchasing a license, and provides the option of launching a browser window which will take them to the Malwarebytes web site to purchase a license.

Your license information will be in an email sent to you by Malwarebytes at the time of purchase. Locate your license information and click the Activate License button. You will then see the following screen.

Please note the checkbox and the words "My license came with a License ID." If you are using our "old-style" license, you will also need to check that box and enter your License ID along with the Key.

Important: Please note that you must be online with an active Internet connection in order to successfully activate your Premium license.

The construction of the Key is different, so make sure that you choose the right screen for entering your license information based on whether you have an ID and Key, or just a Key. After entering in your license information, click the Activate License button. Your Malwarebytes screen will refresh, as shown below.

Please note that the two license-related links in the Menu Bar have been replaced by a link called My Account. Also note that the License has changed from Malwarebytes Premium Trial to Malwarebytes Premium.