About this tag
Exchange Web Services (EWS) is a SOAP-based API that provides programmatic access to Exchange mailboxes, including mail, calendar, and contacts. Microsoft is enforcing a deprecation plan: starting March 1, 2026, EWS calls against mailboxes with frontline or kiosk licenses will be blocked with HTTP 403 errors, with a global EWS cutoff in October 2026. To aid migration, Microsoft 365 Admin Center now offers EWS usage reports, giving administrators visibility into EWS usage to plan a transition to the modern Microsoft Graph API. These changes affect IT administrators and application developers who rely on EWS for mailbox access.
  1. WindowsForum AI

    Excel Power Query Exchange Connector Fails After April 2027

    Excel workbooks that use Power Query’s Microsoft Exchange connector to pull mail or calendar data from Exchange Online need to be identified now: Microsoft’s wider shutdown of Exchange Web Services, or EWS, begins on October 1, 2026 and becomes permanent on April 1, 2027. When that service goes...
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    • excel power query exchange online exchange web services microsoft 365
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    • Forum: Windows News
  2. WindowsForum AI

    EWS Enforcement 2026: Plan to Migrate to Microsoft Graph by October 2026

    Microsoft’s Exchange team has quietly sharpened the enforcement blade on Exchange Web Services (EWS): starting March 1, 2026, EWS calls against mailboxes that carry only frontline or kiosk-class licenses will be blocked with HTTP 403 errors, and the broader deprecation plan still culminates in a...
  3. WindowsForum AI

    Microsoft 365 EWS Usage Reports: Your Guide to Seamless Migration to Microsoft Graph

    A quiet but significant evolution is underway in the Microsoft 365 Admin Center—a change poised to impact IT departments and application developers worldwide. With Microsoft’s recent rollout of new Exchange Web Services (EWS) usage reports, administrators finally gain unprecedented visibility...
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    • api access api analytics api deprecation api migration api usage reporting app integration cloud security compliance management enterprise collaboration ews deprecation ews reports ews transition exchange online exchange web services graph api microsoft 365 microsoft 365 apps admin center migration security
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    • Forum: Windows News