Posted by Chris Scott Barr on May 15, 2012

If you’ve been trying to get onto Diablo III tonight, then as we’ve said before, Error 37 seems to be the biggest thing hindering most people. However, it is not the only error message showing up. There are four others that seem to be causing people some concern: Error 3004, 3006, 3007, and 300008.

According to Blizzard, these all all seem to boil down to connection errors, but not on their end. They have already posted a support article that outlines a variety of ways to fix this issue. Of course, it’s really all just a fancy way of saying “turn it off and on again.”

The only thing you might need to do outside of your normal connectivity troubleshooting is to open a few specific ports on your firewall. These would be 80, 1119, and 6881 – 6999. These will probably already be open, but depending on your security, some of them might not be. If you’ve encountered any of these errors and fixed them using a different method, feel free to share in the comments below.