Microsoft to block Exchange Web Services access for unsupported licenses

petri.com

Microsoft will block Exchange Web Services (EWS) access for certain unsupported mailbox licenses starting March 2026. This change aims to enhance security and enforce proper licensing by restricting EWS access for Kiosk and Frontline licenses. Organizations should audit EWS usage and migrate applications to modern APIs like Microsoft Graph to avoid disruptions.


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Microsoft to block Exchange Web Services access for unsupported licenses | News Minimalist