Tech-WiKi Windows Server Security Event 6406 October 24, 2016June 12, 2017 forumadmin 0 Comments Windows Server Security Event 6406: %1 registered to Windows Firewall to control filtering for the following: %2. Firewall category: %1 Related posts: Windows Server Security Event 6408 Windows Server Security Event 6407 Windows Server Security Event 5442 Windows Server Security Event 5024