Dedicated server setup

Hi Im trying to create a server so I can play with friends on diffrent network. 
I'm playing from my pc and try to run the server from my computer. Problem is I can't runt dedicated xonotic.exe or the server_windows bat file while I'm running my game client xonotic.exe when running xonotic dedicated.exe I get a lock file to not open more then one xonotic. How do I solve this problem? Thanks for all reply.

I'm running game from xonotic folder from zip file.

This is a design issue, because both binaries use the same crypto key by default.
You can solve the issue by using -sessionid parameter.

Code:

xonotic.exe -sessionid server

You can also modify the server_windows.bat file (add -sessionid server).

The key files are in your user folder.
Windows: C:\Users\<your_user_name>\Saved Games\xonotic

In bat file should I type add -sessionid server in the top of the bat file? 

Edit the last line in your server_windows.bat file:

Code:

.\%executable% -dedicated -sessionid server +serverconfig server.cfg %*

Edit the last line in your server_windows.bat file:

Code:

.\%executable% -dedicated -sessionid server +serverconfig server.cfg %*

Thank you so much. it really did the trick.