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Unable to run a -server ( "Dedicated Server" ) and a -client (Headless Client) on the same machine due to Steam.
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I am unable to run a server and a headless client in the current setup due to Steam complaining that the arma3.exe binary is already running.

Now either the admin must hack steam to enable this or a separate license must be installed and purchased on separate hardware (adding to costs required for a HC-powered server setup). {F17036}


Legacy ID
Steps To Reproduce
  1. start arma3.exe with the -server parameter
  2. start arma3.exe with the -client parameter
Additional Information

Maybe a separate dedicated server package like what we have in A2OA would be a solution to this.

Event Timeline

Ligthert edited Steps To Reproduce. (Show Details)Mar 6 2013, 5:20 PM
Ligthert edited Additional Information. (Show Details)
Ligthert set Category to Other.
Ligthert set Reproducibility to Always.
Ligthert set Severity to Minor.
Ligthert set Resolution to Fixed.
Ligthert set Legacy ID to 2624094924.May 7 2016, 11:00 AM

you just have to start the exe itself and not twice via steam

if it's started with steam it appears as a child process which will be denied if started twice

I've attached a screenshot basically showing the error I am getting when I am running arma3 with the -client parameter. The ArmA 3 -server was launched via ArmA 3 Launcher. Technically "outside of steam".

looks like steam is checking the process pool of windows itself.
in that case try starting both without steam

I started both outside steam; -server is started via Arma 2 Launcher. -client from commandline.

Use the files in this archive, the steam_app.txt allows you to run multiple. I have 4 servers and 4 clients all running on the same machine.

^ What thevisad said


That won't work, my post above has 5 servers and 5 HC running on the dedicated server.

This has been fixed, though there are still some problems with the HC.