I'm running a web hook which uses the O365 mangement API to obtain activities for SharePoint. This worked until yesterday 10 PM. Suddenly a call to


using a bearer token is responding with code 500 or 503 with a huge timeout of up to 1.5 minutes. I cannot figure out what happened. I even redeployed my API but still no success. If I try direct access using Fiddler it fails too.

EDIT: The key in Azure AD will expire on ‎9‎/‎20‎/‎2018.

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