The program I was using is called : Symantec Enpoint protection 12.1.2.2015.

So it works with symantec now? I don't even dare try.

I actually tried putting it in the exclusion list for the firewall and other things but it still didnt work. The only thing that worked was uninstalling symantec, steam and dayz and then reinstalling steam and dayz. Alos never had these issues til, just now.

Yes I am very happy to have foudn the casue of my problems. The product I was using is named "Symantec antivirus 2014". I have to say though that it is kinda strange that this should cause problems as I have been using it all the time AND playing Dayz. This is the first time it has caused any problems.

OMFG it worked. The game now works. But now I dont have firewall any more :/

I am using symantec. I'll try disabling it. Thx for teh tip

Yes.

No it did not.

I tried that right now. Same thing. I also tried disabling my firewall and virus protection but it only does the same thing.

There are no error messages or events in the event viewer. All that happens is that BEservice opens in taskmanager, runs for a few seconds and then it shuts down. Dayz.exe never opens and not steam_bootstrapper.exe either.
The only things related to dayz that runs are steam.exe, steamwebhelper.exe and another steamwebhelper.exe

That was all at the time. Theres one mdmp file now. You see, I reinstall the game ten times a day to try to get it working so things change.

Ah ok, I couldnt see them as I had "show hidden files and folders off". Here they are, I had to rar them as there was a fault message:

Ok, theres only two files and they are almost empty. I sent them as an attachment.

There used to be but since I've reinstalled windows they are gone. I did however, already try deleting it and it didnt work. 0.61 experimental worked fine up until last weeks patch. I was very surprised when it didn't start as I had changed nothing at all on my computer, no new software. no hardware, no updates to windows or anyhting. The whole thing is a mystery.

Its low. However I found that pulling the effects volume to max and the VOIP volume to almost nothing made it work adequately. Gunshots are pretty loud now though. Which is nice.