It is because you did not hide the bodies. Hide the bodies and once you plant the micro don't stick around or the general and men will see you. As soon as you plant the micro hurry and duck through the small opening IN the tent and stay out sight as you listen to the conversation in the tent.
where the h*** are you supposed to hide the bodies? I've tried several places, even piled them up in one place, but still when i plant the microphone, the alarm goes off.. what to do?
i had the same problem, about three days of the same problem, ignore everything, go straight in the back of the tent WITHOUT killing anybody, plant the bug, bingo, it's only that stupid mesage that comes up telling you to hide the bodies that makes you think you've got to hide them, ignore it, and enjoy, and mark1983 , the magnetic card for the door opposite the entrance to the tent is on the desk in the main tent after you've heard the conversation
kill the three gaurds and hide them behind/ inside the bush near the perimiter fence hack em n stack em... as "welly" said crouch into the tent plant the bug and hide in the back compartment untill the conversations over and they've all gone away... now, collect keycard and the file off the desk go out the back and snipe the other soldiers
i killed all the guards with the bow,and hid them behind the grey tents,then planted the micro and ran straight out the big gap in the tent,and hid behind the nearby grey tent, til the meeting was over,then snuck back and took out the 2 guards at the small tent opening that appear after you plant the micro, then out into where the generals etc came from,which now can be opened by the swipe card, found on the table in the tent earlier..