Office365 ECP broken after shib3 upgrade

[Klingenstein, Nate]

> I can switch back to shib2 and confirm it works, and switch forward to shib3 and confirm it’s broken.  Does anyone have any insight?

Sorry for just dispatching the quick'n'ugly.  It looked like a production switchover issue to me, so I wanted to get you a quick response.

For what it's worth, I haven't encountered that specific message nor that behavior.  A random site of which I know once had the ECP endpoint out entirely and Microsoft Exchange apparently worked fine on most or all devices, ironically.  Apple Mail bricked.  The experiment was not repeated.

A reason I haven't encountered that message is that, at each opportunity, I've done the opposite of Scott's wisdom and ported the configuration file format first.

I probably had less to change than you did, but for me, a chiral mixture was more confusing and less predictable.  If I knew the code base very well, then I would have felt much more comfortable following Scott's advice instead.