MC1257217 Action Required: Update active Exchange Web Services Applications
In 2018, we announced that we were no longer making feature updates to Exchange Web Services (EWS) in Exchange Online, and we advised developers to move to Microsoft Graph. In September 2023, we announced that on October 1, 2026, we will start blocking EWS requests to Exchange Online. We are now less than 12 months from October 1, 2026. We have made progress on closing most parity gaps with more changes in development to be released in the coming quarters. Please refer to Deprecation of Exchange Web Services in Exchange Online for up-to-date guidance and roadmap information. You are receiving this notification because there are EWS applications in your tenant. If you haven't already, start the process of working with your application development organization and your application vendors to either sunset or migrate active EWS applications on your tenant to the Graph API, Power Platform, o