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exchange on-prem

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Exchange on-prem refers to the on-premises deployment of Microsoft Exchange Server, which organizations use to host their own email, calendar, and messaging infrastructure. Recent discussions on WindowsForum.com cover critical changes affecting Exchange on-prem environments, including the retirement of Office Online Server (OOS) by December 31, 2026, which will impact in-browser document preview and editing in Outlook on the web. Additionally, Microsoft has introduced cloud-managed remote mailboxes, allowing hybrid organizations to offload Exchange attribute management to Exchange Online while retaining on-premises Active Directory, paving the way to retire the last Exchange server. These developments highlight the ongoing shift from on-premises to cloud or hybrid configurations, with implications for security updates, support, and migration planning.
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    Office Online Server Retirement: What Exchange On Prem Customers Must Do

    Office Online Server (OOS) retirement announced — what Exchange on‑prem customers need to know and do By WindowsForum IT Desk — Oct 21, 2025 Microsoft has announced that Office Online Server (OOS) will be retired and reach end of support on December 31, 2026. For organizations that run Exchange...
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    • Forum: Windows News
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    Cloud-Managed Remote Mailboxes: A Step Toward Retiring the Last Exchange Server

    Microsoft’s Exchange team has taken a decisive step toward finally letting organizations retire the last Exchange server in hybrid environments by adding cloud-managed remote mailbox support — a per-mailbox “flip-the-switch” that transfers Exchange attribute authority to Exchange Online while...
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    • active directory admin consent audit logs certificate management cisa-ed-25-02 cloud migration cloud writeback cloud-managed-remote-mailboxes compliance auditing configureexchangehybridapplication.ps1 cve-2025-53786 entra connect sync entra id ews block exchange hybrid exchange on-prem exchange online folder sync freebusy hybrid apps hybrid configuration wizard hybrid deployment identity management isexchangecloudmanaged last-exchange-server mailbox attributes mailtips microsoft education oauth on-prem ad patch management phase 1 preview phase 2 writeback phase-1 phase-2 powershell profile picture proxyaddresses rbac rich coexistence security hardening setting override writeback
    • Replies: 2
    • Forum: Windows News
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