Our Windows Server 2003 SP2 has been hit by a hacker that installed a few services and other niceties and disabled our firewall.
I've managed to clean up (the strange thing is that no detection software I used was able to find anything wrong) but the firewall is still down and I'm getting the above error when trying to open its configuration.
I've followed a few links but nothing seems to work. Is there a way to re-install it?
Stuff I tried: