Forum Discussion
None of this will actually fix the problem. Simply you cannot connect to the EA Servers. After initial strtup of ME3 and the attemt by ME3 to connect to the EA servers the Msg " Error The Mass Effect 3 server is unavailable at this time. Please Try later. Then it says OK which you click and after some delay eventually it goes back to the game menu. Then you can actually play ME3 but without any access to most of the DLC that hass been paid for and installed. I can't access. The message Unable to authorize the licted DLC. Please log in to the Alliance Network with the account used to purchase the DLC. From Ashes, Leviathan and Firefight pack.
I have been in touch with EA support and they advised to do what you have listed re the DNS cached. Have passed that info on to the Bioware Forum for others to to try but so far that does not work.
Very disappointing that EA do not appear to be bothered in trying to resolve this problem.
First I have the problem for months but I solved it, Check out my connection problem solver at http://social.bioware.com/forum/1/topic/344/index/14855429/1#14855429
It's about 5 payes combined.