Updated 11:26 PM UTC, 4/1/21:
Per Microsoft: They have rerouted traffic to their resilient DNS capabilities and are seeing improvement in service availability. They are continuing to see availability improvements, so some customers may begin seeing services recover. Microsoft is managing multiple workstreams to validate recovery and apply necessary mitigation steps to ensure complete network recovery.
Original Post:
Microsoft 365 is currently experiencing some widespread issues impacting multiple Microsoft 365 apps. Some or all services may be impacted for users. At the time of the original post, Microsoft had not acknowledged the issue on their health status page, status.office365.com, but had acknowledged it at https://status2.azure.com/. We are awaiting ETA for an expected resolution. We will update this post when more information is available.

These issues are solely on the Microsoft systems. We will be happy to record and report any issues you might be experiencing.