Runtime Error Encountered while accessing Hotmail Live

I captured the screenshot when it happened. I know, error can happen anytime but thought of posting it so here it is..

Click to enlarge it

Description: An application error occurred on the server. The current custom error settings for this application prevent the details of the application error from being viewed remotely (for security reasons). It could, however, be viewed by browsers running on the local server machine.

Details: To enable the details of this specific error message to be viewable on remote machines, please create a tag within a "web.config" configuration file located in the root directory of the current web application. This tag should then have its "mode" attribute set to "Off".

Obviously they are using IIS. But what curious me is, don't they set the default error page? Hrmm..