I had the same experience. Suddenly Emacs Gnus reader stopped working, about 11:00 on a Friday morning. I posted the bug and had a reply from Lars Ingebrigtsen with an explanation and a workaround by 13:00. I think it was fixed by the beginning of the following week.
My experience of trying to get help from Microsoft on the other hand is, well let's just say not quite so impressive; they kept me on hold for 45 minutes once and never did solve my problem.