Cannot Activate Bitdefender Firewall, you need to restore the BFE service. Please follow the steps below:
1. Open Control Panel, Click on Administrative Tools, then open Services
2. Type Base Filtering Engine on the Search box.
3. If the status reads Stopped, then press right-click and select Properties option.
4. Before you click on start, make sure the startup type is set to Automatic.
5. Restart Windows, when the process is complete.
After following the above steps, you should be able to activate the Bitdefender Firewall without any issues. If still facing the issue, you can call on contact Bitdefender support for more help.
Read more : Bitdefender phone number