Microsoft to disable Exchange Web Services for Frontline Worker and Kiosk mailboxes

theregister.com

Microsoft will block Exchange Web Services access for certain mailboxes starting March 2026. Frontline Worker and Kiosk-only mailboxes will lose EWS access unless they upgrade to specific Exchange Online or Microsoft 365 licenses. This change is part of Microsoft's ongoing effort to enhance security and control, with EWS slated for global disabling in Exchange Online by October 2026.


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Microsoft to disable Exchange Web Services for Frontline Worker and Kiosk mailboxes | News Minimalist