Needs Password Error for Outlook - widespread

We are seeing a wide range of "needs password" errors in Outlook within the past week, globally. 

Is anyone else experiencing this? 

There is a registry hack to DisableADALatopWAMOverride, but it is only a short term fix, and the numbers we are starting to see don't really make this a good option.

We run Office 365 Pro Plus Semi Annual Targeted builds.