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Bitdefender GravityZone license validation errors


Sometimes when you register your Bitdefender license key in GravityZone Control Center, you may encounter the following error messages:

  • No connection to the licensing server.
  • The license is invalid.


In these situations, ensure that:

  • You have a valid license key.

  • The connectivity to Bitdefender Licensing Server is working properly.
    Make sure that your border firewall allows the connectivity to the following address and whitelist it if possible:

    To check the connectivity:
  1. Open a SSH connection from your GravityZone appliance.
  2. Log in with the username: bdadmin and the password that you have set.
  3. Type the commands below to install telnet and check the connectivity:
    sudo apt install telnet
    telnet 443

    If the connection is successful, the result will be similar to:​​​​​


If these errors occur when you replace an old license key with a new one, make sure that GravityZone is updated to the latest version.

If the registration process still fails, contact the Bitdefender Support Team attaching a set of advanced logs to your support ticket.

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