Legacy API begins disappearing from tenants today, with no exceptions after April Microsoft begins disabling Exchange Web Services EWS in Exchange Online today, ahead of the API permanent retirement on April 1, 2027. Introduced with Exchange Server 2007, EWS allows applications to access mailbox data including email, calendars, and contacts. Microsoft says the service no longer aligns with today security, scale, or reliability requirements and recommends moving integrations to Microsoft Graph,...
