Microsoft is reporting a global issue with their Exchange Online service, which is impacting all clients. Microsoft is actively working to resolve the issue. When trying to access email through the web, users may encounter an error with the following message
AADSTS50011: The reply URL specified in the request does not match the reply URLs configured for the application: e48d4214-364e-4731-b2b6-47dabf529218.
Please note that this issue does not affect the Outlook desktop client, or Outlook mobile application users.
We are sorry for any inconvenience, and thank you for your understanding. If you have any questions, please call the Help Desk at 610-436-3350.