To install Bitdefender as an silent unattended installation use
"BitDefender_Setup.exe" /silent
BitDefender will reboot your computer after the installation
To uninstall BitDefender silent is a little more tricky.
"..msiexec.exe" /norestart /q/x{EB4766BC-1967-41A5-80A7-3B1E8733C4F6} REMOVE=ALL
The Key in the Brackets depends on the Bitdefender Version you have got installed.
It can be found in the registry at this location
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\BitDefender... UninstallString:
I hope it helps somebody out there
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