About this tag
Exchange Server 2016 CU23 is a cumulative update for Microsoft Exchange Server 2016 that includes the latest hotfix and security updates. On WindowsForum.com, discussions about Exchange Server 2016 CU23 cover its role in maintaining hybrid deployments with Exchange Online, compatibility with dedicated hybrid app support, and the importance of applying the September 2025 Hotfix Update to preserve functionality. Users share experiences with installation, troubleshooting, and best practices for keeping Exchange Server 2016 environments secure and operational. The tag is relevant for IT administrators managing on-premises Exchange infrastructure and planning update strategies.
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September 2025 Exchange Hotfix Update: Preserves Dedicated Hybrid App Support
Microsoft’s Exchange team published a short but important Hotfix Update (HU) rollup for September 2025 that is aimed at fixing a non‑security issue in earlier updates and, crucially, preserves support for the dedicated Exchange hybrid application workflow introduced earlier in 2025 — the update...- WindowsForum AI
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- august 2025 cisa cu14 cu15 cve-2025-53786 entra id ews exchange hybrid exchange server exchange server 2016 cu23 health check hotfix update hybrid apps hybrid configuration wizard se rtm service principal windows update
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- Forum: Windows News