Session Lost as soon as I press join on a server... HELP

[jakesenpai123 0]

I want to start out saying that I am not VAC/BE banned. I have over 430 hours in the game and have never hacked. My friends have all been playing just fine. After school, I hopped on my mumble chat and then launched DayZ... Only to find out when I joined the server my friends were on, I got "Session Lost". It was working just fine the night before. I have tried multiple servers, verifying my game cache, multiple re-installs, and multiple router/modem restarts. This is VERY annoying. PLEASE HELP ME FIX THIS.

[Zikrome 0]

Getting The Same Issue here