Basicly what happens when i try to run Operation arrowhead is i get a message from steam saying "mainserver could not be contacted"(I dont know what the english error code would be this is directly translated from the swedish one). the same error message appears when I try to access the cd-key from the steam menu. accessing arma II and the cd-key is working as it should, it's only affecting operation arrowhead.
There's nothing wrong with my connection, i've run it as administrator checked the cache integrity, reinstalled both games but to no avail. when i tried to run the DayZ mod i got an error message regarding cd-key when trying to join a server.