Some users are reporting that they are unable to sign into Office 365 email. Some users are still able to login and use emails services without any degradation. IT Services is investigating to understand who may be impacted by this degradation. Please continue to report any access issues to the IT Support Centre via the online helpform to help determine the breadth of the issue via. https://www.queensu.ca/its/forms/itsc/helpform/

Workarounds:
There are no known workarounds at this time. As workarounds become available or if the problem is resolved, IT Services will update this notification.

IT Services has contacted Microsoft directly and they have provided an initial update as follows:

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'".
Current status: Microsoft is collecting data on the application referenced in the error message and is investigating root cause.

Scope of impact: This issue may potentially affect any user, but is not reported as wide spread