Alan Woodward
It’s chaos. I can guess what’s happened. My educated guess, but if I were a betting man I reckon it’ll be a cascade failure to do with the health check, some configuration change internally that triggered it, and progressive inability of other servers to cope with the extra load i.e. a cascading failure. If that’s what’s happened, they will be frantically trying to balance the loads across their servers and find out what triggered the initial health check failure.
“It’s very fluid as Microsoft are not saying great deal. However, what it shows is how dependent so many are on the Microsoft server estate working properly. It has all sorts of knock on effects such as when a system sends you a code to log in via your email.
“And I don’t believe this is just email. I think it’s significant parts if there M365 application suite.