So i have been trying to get onto the multiplayer for awhile now but every time i try and log in it says "An error has occurred. Please check network connectivity."
Anybody getting the same issue?

same thing for me juss waitn for a fix...

SAME Problem for me...

Disable internet connection sharing. If yours is like mine and the option doesn't show up, you'll need to physically disconnect first and then change the setting, then reconnect. Worked for me.

Hey guys, I was having this on both the demo and now on retail. I found a youtube video that discusses it. On my Win7 I share my internet to other devices and so I have internet sharing turned on. you have to turn off internet sharing or bridge your LAN connection. It has at least allowed me to start to play in multiplayer for the FIRST time. before ALL i got was the error. here is a link to the youtube video. hope it helps in your case.
http://www.youtube.com/watch?v=Fikv2DpZNWU

Thank you very much, it works now