Lets see if we are lucky with the next patches and the problem is finally solved.

Just wanted to say that it is still not working

25 days since the last post and it's still not working!

The only way I can host a game properly (my friends see the game instantly on the server browser) is to switch my router to modem mode (disables all routing functions and wifi). An ugly fix just to host a game...
Forwarding ports or even a DMZ doesn't have any effect. Friends still cannot see the game etc
The router itself is a Virgin Media SuperHub2 (100mb cable connection) and is working fine and I can host any other game I want, just not Arma 3.

Until recently, I couldn't host games at all until I unsubscribed and deleted all Workshop content.

It now works for me! I verified my cache (first time playing since the recent update) and even though it didn't seem to update any files, it now works!

I'm so happy :D

for me it stopped working, after it worked forever. (server not visible in server list, server doesn't respond to my steam friend after steam invitation) i suspect that a firmware-update of my router may be the cause. port-forwarding is set up correctly!

is there a way to test, if the ports are open for my ip? the router interfaces states, that port are open for my ip, but i don't trust it, since it stopped working after a forced firmware update...

*edit* false alarm: my internet provider changed my connection to ipv6, so any ipv4 connection would run through a gateway/proxy blocking ports regardless of my local settings.

Hi all,
Still I cant play with friends nor they cant see me. Is this issue will find a solution before the marksman dlc? I hope so.

Hi all;
I check again this yesterday with my brother on stable branch patch 1.40 and we still cannot see each other. Invites and join game doesn't work.
Please keep us updated with the progression of this issue.

Hi everyone,

for me it is still not working. Checked last weekend with a friend (2015-04-25).

How about you guys?

@JayyTee. For me the only way to make it work is with Evolve. It works great but without this is impossible, at least for me.

Thanks for the tip Peter. I need to try that some time :)

I tried via Hamachi (VPN) before but that did not really work out optimally. Too slow and too many desyncs.

But in general it's just really not cool that Bohemia is not able to provide a fully functioning multiplayer. I mean, we paid for it!

Hosting via UPnP works like a charm for me as of the 1.42 update! Thanks for at least partially fixing the problem =)