Suggestion #1: The quick fix for when you get this error is to quit the game, then reload it. If you receive the Call of Duty 5:World at War ‘Can Not Connect to Online Service’ error, then try any of the following: It took me two days to work all this stuff out, and I’m not real happy about having to do so after spending $49.95 on this game at. I wrote this article to help other gamers get their CoD5 working. Needless to say, lots of people are having problems playing CoD5 online and they’re talking about it in various message boards all over the web. Furthermore, a Google search of ‘Call of Duty 5’ and ‘Server authentication error’ yields over 19,000 results. That’s pretty amazing for a game that has only been out for a few weeks. A Google search for ‘Call of Duty 5’ and the error ‘Can not connect to online service’ yields over 119,000 results. Right now, two main errors are preventing people from playing this game online.
