I can browse the MSDN forums just fine when not logged into my Windows Live account but as soon as I try and login I get a redirect loop error message (at least in Chrome, the other browsers display a different error message).

I've tried it with the following browsers:

IE 9
Chrome 21
Opera 12.02
Firefox 15

and they all cause problems. Is anyone else seeing issues like this? It is highly annoying as I have a question I'd like to ask that I think would be best answered there.

Interestingly the MSDN forums suddenly started working for me. Not sure what was wrong previously.

I know earlier this week they're registration servers were down for ~1 day. If I were to randomly guess as to why they are bulking up their infrastructure in anticipation of windows 8 launching.

Ah, that would explain it. Thanks .

MSDN always causes issues for me when I need a answer to a simple problem lol