OK i've been using this for ages.. years.. No problems aside from the service itself being down for whatever reason once in a blue moon so that's all good about 2 months or more ago i had a problem for quite awhile where i couldn't get MSN Messenger to sign in at all. The only way i fixed this was to download Windows Live Messenger. Instantly solving the problem and hasn't have a problem since. About a month ago, a customer of mine recently started having issues with MSN Messenger with exactly the same message as i was getting. Tried a few dozen things including removing it and then downloading the latest msn incarnation. With no go. Then i directed them to Windows Live Messenger. Now heres the thing, i wasn't able to stick around and wait for windows live messenger to complete (i was fairly confident that it would resolve the problem as it did with my own machine) and being they are on dialup, i wasn't willing to sit around for nearly 1-2 hours for it to download. (and they weren't willing to pay me for it). I told them to give me a call if they had issues. Well i just had the customer walk into the shop and state the after downloading and installing, there was still no green light. Gave exactly the same message. Now at this point, i've done piles of searches on the internet for a cause of this with the message. Googling and searching the MS database. I can't seem to find anything that would relate to the problem... usually what i see about it is directly related to a router failing to handle things correctly or some stupid settings. I've checked the firewall settings on messenger for the computer and it's been allowed/unblocked so that's not the issue there The computer doesn't have Any for of anti-spyware/virus protection but i did a full scan myself and found absalutely not a thing wrong or out of place. The machine itself does just fine if not absalutely great in anything else they want it to do. They don't wanna pay a shitload of cash for highspeed thus they remain on dialup. I'm actaully gonna guess that the dialup ISP may be doing something at thier end as my last resort. But frankly i'm completely puzzled over it.