@scottalanmiller said:
What Exchange Online issues are going on? I have not seen any yet.
The incident ID is EX27794 under "e-mail and calendar access" of the status log, here's the latest status update as of 3:30pm PST:
Current Status: The investigation determined that a portion of infrastructure which facilitates authentication to the service is experiencing higher-than-normal resource usage. Engineers are analyzing service telemetry to determine what is causing the high resource usage.
User Experience: Affected users are unable to connect to the Exchange Online service when using multiple protocols including Outlook, Outlook Web App (OWA), Exchange ActiveSync (EAS), and Exchange Web Services (EWS).
Customer Impact: A higher than average number of customers are reporting this issue. Analysis indicates that customers will likely have some users experiencing this issue.
Incident Start Time: Wednesday, July 15, 2015, at 9:25 PM UTC
Next Update by: Wednesday, July 15, 2015, at 11:30 PM UTC