NOTICE – On August 4 2021, Malwarebytes Endpoint Security reached its End of Life. For more information, see the Malwarebytes Endpoint Security End of Life notice. To upgrade to a supported version of Malwarebytes, see Malwarebytes Endpoint Protection.

When attempting to activate your license key in the Malwarebytes Management Console, the following error appears:

Unable to contact server to verify your license key. Please check your connection.


Your firewall, proxy settings, network configuration or another antivirus installed application is preventing the Management Console from contacting the activation server, https://keystone.mwbsys.com.


  1. Add the following exceptions to your firewall and proxy settings:
  2. Add https://keystone.mwbsys.com as a Trusted Site in Internet Explorer.
    Refer to Microsoft’s TechNet article, Internet Explorer: Enhanced Security Configuration.
  3. In the Windows Services Manager, restart Malwarebytes Management Service.
    • Click the Start menu.
      For Windows Server 2003 operating systems, press the WINDOWS + R keys.
    • Type services.msc, then press Enter.

    • Right-click the Malwarebytes Management Service > Restart.
  4. If you have another antivirus application installed on your server, add the Management Console to your antivirus’ exclusions.

    To see a list of exclusions required for the Management Console, refer to the article Malwarebytes Endpoint Security exclusions list‌.

Source : Official Malwarebytes Brand
Editor by : BEST Antivirus KBS Team

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