For at least the past hour or two, Microsoft’s Azure cloud has been up and down globally due to a DNS configuration mishap.
The platform-wide outage has knackered all sorts of Redmond-hosted systems around the world, from Azure SQL databases and App Services to multi-factor authentication, Microsoft 365 and Teams, Dynamics, SharePoint Online and OneDrive..
https://www.theregister.co.uk/2019/05/02/microsoft_azure_outage_dns/