dayz standalone not launching?

[d.walker43 196]

Hi guys, so I have been playing dayz and have been enjoying it greatly. However, starting a few days ago, my game wont launch. Not just dayz, but all of my steam games are doing this. When I click on play or on my desktop shortcut the window that says "preparing to launch ____" shows up, but then the game never launches and this window just stays forever. I have waited up to 20 minutes and it still has not launched. All of my games were fine until all of a sudden this problem occurred. dayz, tf2, ftl, and planetside 2 all will not launch. Any help with this problem will be appreciated. Thanks

[boneboys 7988]

I think you had better contact Steam support.

https://support.steampowered.com/index.php

You may post here with more details but this is not a DayZ problem.

Check :

for virus and malware.

Steam permission in Firewall

Steam client updates.

Start games from Library, not desktop short cuts.