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 mailboxes are on-premises and some are in Microsoft 365, this requires a two-step migration. The first step should already be complete; the second step must be finished before October 2026 and requires Exchange Server Subscription Edition (SE). Microsoft has confirmed there will be no exceptions past April 2027.

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Microsoft announced agentic features for Copilot in Outlook, expanding from single-task assistance to continuous, multi-step automation of email and calendar work. These features let Copilot act independently on your behalf — prioritizing messages, drafting follow-ups, responding to meeting invites, and resolving scheduling conflicts. Access is currently limited to Microsoft's Frontier early-access program and requires a Microsoft 365 Copilot license. This article explains what the new features do, what your infrastructure must look like, and how you enable access as an administrator.

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