{"id":14129,"date":"2026-09-02T06:04:16","date_gmt":"2026-09-02T06:04:16","guid":{"rendered":"https:\/\/www.cigatisolutions.com\/blog\/?p=14129"},"modified":"2026-09-02T06:06:21","modified_gmt":"2026-09-02T06:06:21","slug":"microsoft-ews-retirement","status":"publish","type":"post","link":"https:\/\/www.cigatisolutions.com\/blog\/microsoft-ews-retirement\/","title":{"rendered":"Microsoft EWS Retirement: Timeline, Impact, and How to Prepare"},"content":{"rendered":"\n\n
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Exchange Web Services (EWS) is the SOAP-based API behind mailbox access. It has powered Exchange Server and Exchange Online for nearly two decades. EWS enables email, calendar, contact, and public folder operations. Countless enterprise integrations were built directly on top of it. Microsoft is retiring EWS because it no longer meets modern standards. It falls short on both security and reliability expectations today. This retirement pushes organizations toward adopting Microsoft Graph API instead.
This matters broadly: administrators must audit dependencies, developers must migrate code, & migration, backup, & third-party application vendors must update tooling before functionality breaks. The EWS deprecated unfolds in phases, with disablement starting October 1, 2026, & full, permanent shutdown by April 1, 2027. [Microsoft Learn<\/strong><\/a>]<\/p>\n<\/div>\n

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