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"Connection Failed" When trying to join certain servers.
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So basicly i can't connect to certain servers, It just says "Connection Failed" when I join.

I have googled and researched ALOT. And many seem to have a problem with the routermodem i have Thomson-Alcatel TG789vn, People have reported problems with certain Asus, Belkin and Technicolor models (I can't remember the exact model number/name) aswell. So I do not think its a problem on our (consumer) side. I think there might be something conflicting in the game. (I'm not an expert but thats what the research says that I've found)

Reason I put this priority ar urgent is because this problem just happens to be with 2 of my friends. (I can't join their server.)

Stuff I've tried to fix this problem:

  • Run Steam and Arma 3 Alpha as Administrator.
  • Portforwarded TCP and UDP 2302 to 2308 in my router.
  • Tried making a server to see if the buddies I had the problem with could join my server, which the couldn't
  • Also tried turning off Upnp on my router cause this looked like a similiar problem that I had with Battlefield 3.
  • Restarted the router.

Tried all of this but no positive results unfortunately. And now I'm hoping you guys can fix this issue a few of your beloved consumers are having.
I hope you guys can fix this.

Love the game so far! Great Alpha guys!
Keep up the good work! And if you guys could E-mail me on "" if you guys are starting work on the problem. I'd love that!


Legacy ID
Not A Bug
Steps To Reproduce

Have a certain modem/router and try connect to another person with a specific modem/router. (All I know that might be the problem.)

Event Timeline

SwedishFreaK edited Additional Information. (Show Details)
SwedishFreaK set Category to Multiplayer.
SwedishFreaK set Reproducibility to Sometimes.
SwedishFreaK set Severity to Block.
SwedishFreaK set Resolution to Not A Bug.
SwedishFreaK set Legacy ID to 2706125617.May 7 2016, 12:36 PM

Im sorry but this really is a router related issue. I recommend you searching a Thompson/alcatel forums or some other modem/router/switch related forum to solve this issue.