Ouch, and login.microsoftonline.com too - i.e. SSO using MS accounts. We'd just rolled that out across most (all?) of our internal systems...

And microsoft.com too - that's gotta hurt

It is interesting to see the differential across different tenants in different geographies:

- on a US tenant I am unable to access login.microsoftonline.com and the login flow stalls on any SSO authentication attempt.

- on a European tenant, probably germany-west, I am able to login and access the Azure portal.

SSO and 365 are working fine for us, but admin portals for Azure/365 are down. Our workloads in Azure don't seem to be impacted.

Guess you have NASSO now (Not A Single Sign On)

It's Safe and Secure!

I am still stunned people choose to do this, considering major Office 365 outages are basically a weekly thing now.

We are very dependent on Azure and Microsoft Authentication and Microsoft 365 and haven’t had weekly or even monthly issues. I can think of maybe three issues this year.