If you're having issues registering or attending Microsoft webcasts in the last week (Oct. 13 and beyond), it's not you.   We've having issues with our worldwide events and registration system that are wreaking havoc.   We apologize for the problems.  For now, our production staff is sending manual emails with links to get you directly into webcasts you registered for.   Please pay attention to those emails, because they include direct links that will get you into the webcast.
Meanwhile, the registration system team is working to figure out the problem and fix, but unfortunately it's taking longer than we'd all like.

Dean Andrews
TechNet Webcasts