Why does my server show in different colors in the browser?

[Edge100x]

If your server shows with a red "X" in the browser, this means that your client is running a different version than the server. If you loaded a beta on your client, or upgraded to a new release before it was pushed out through Steam, try downgrading.

If your server shows with a red disc in the browser, then one of two conditions is true:

1. You have the server configured with equalModRequired=1 in the ./server.cfg file, and your the -mod parameters on your client are different than the server's.
2. You have add-ons loaded on your client that the server doesn't have, and the server has key verification switched on via verifySignatures=1 in the ./server.cfg file.

[kraze]

Adding on to this, if you are running a Combined Ops server and have "arma2;expansion;ca" specified in your command line as a mod, your server may also show yellow. This is because the line doesn't exactly match your client's.