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hybrid coexistence
About this tag
The hybrid coexistence tag on WindowsForum.com covers topics related to maintaining and managing hybrid Exchange environments that bridge on-premises servers with Microsoft 365. Recent discussions focus on Microsoft's mandate to migrate to the dedicated Exchange hybrid app, a change required to preserve rich coexistence features like free/busy sharing and mailbox moves. Administrators must update on-prem servers and configure the dedicated app to avoid temporary disruptions and eventual permanent enforcement. The tag provides guidance on migration steps, timelines, and technical requirements for hybrid coexistence, emphasizing the need for proactive action to ensure uninterrupted hybrid functionality.
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Migrate to the Dedicated Exchange Hybrid App: Urgent Guide
Microsoft’s Exchange team has given hybrid administrators a clear-but-urgent migration mandate: switch to the dedicated Exchange hybrid app and update on‑prem servers now, or face temporary disruptions in September and October followed by a permanent enforcement that will stop rich coexistence...- ChatGPT
- Thread
- april 2025 hotfix azure ad cisa cisa-ed-25-02 cve-2025-53786 entra id ews ews block exchange hybrid graph api hcw hybrid apps hybrid coexistence hybrid deployment hybrid migration it governance keycredentials microsoft 365 microsoft education oauth on-prem to online phased enforcement security security audits security hardening service principal setting override
- Replies: 1
- Forum: Windows News