(adsbygoogle = window.adsbygoogle || []).push({});This is a very hard glitch to do. You need to jump perfectly into it.
Watch very carefully at the spot where he jumps.
Note:You have to jump a little to the right
WARNING:YOU HAVE TO GO CROUCH NOT PRONE
THIS IS NOT PATCHED , JUST BECAUSE YOU CAN'T DO IT, DON'T SAY IT'S PATCHED
i can vouch i do this gltich all the time.. and its not hard at all.. when you get the hang of it you have have the zombies really far away (if only you are playing) or closer (if you friends are in the room behind you using you as a shield) as long as you dont open the door to the left, the people in the room behind you are going to be fine and no zombies will come to that window.. its somehow part of the door