Exchange Hybrid after EWS retirement: Upgrade to Exchange SE and move to Microsoft Graph
Source: Feeds.4Sysops
Published:
<p>Microsoft is shutting down Exchange Web Services (EWS) — the nearly 20-year-old API that Exchange uses for hybrid coexistence — in Exchange Online in two phases: a soft block on October 1, 2026, and a permanent hard shutdown on April 1, 2027. If you run Exchange in hybrid mode, meaning some mailb