Hi there,
Please follow the steps below:
A. Take ownership of the folders mentioned below as shown
here.
BullGuard Ltd. from Program Files
%allusersprofile%\BullGuard
B. Make sure that all users (Everyone, or add each user manually) have full read/write permissions on all subfolders and files.
C. Save FirewallFix on your desktop and unzip it. Copy both tools in BullGuard's installation folder.
Run the 1.Cleanup tool and restart your machine/
Run the 2.FW_Install tool and reboot again.
Your Firewall will be active after the last restart.
Best wishes!