I received the following email from The Corporate Overlords:
All,
Microsoft is currently reporting service issue with the Outlook email client globally. They are rolling out fixes, however it may take several hours to complete.
Outlook on the web and mobile clients are unaffected. If you are currently experiencing Outlook crashes or problems accessing email via Outlook on your computer, please login with your [Corporate Overlord assigned] credentials to https://outlook.office.com or use the Outlook mail app on your mobile device.
There's an issue with using email, and they notify the users of this issue, by using email. I mean, I got it because I use the web version of Lookout. I have to wonder how many other people at the Corporation know of the issue …