I'm replaying Dues Ex, and I'm currently at the missle silo. I've taken everyone above the silo out, and I'm supposed to go through the dours using the 8456 code. After using those doors I reach a numpad with an infinite strength and the 8456 code does not work. On all the game sites it says to use that code but it just doesn't work. Is there another code that I missed? Or is there something I have to do first?
Any help is appreciated.