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office online server

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Office Online Server (OOS) is Microsoft's on-premises product that enabled browser-based editing of Word, Excel, PowerPoint, and OneNote within corporate datacenters. Microsoft has announced that Office Online Server will be retired and reach end of support on December 31, 2026. This retirement removes Microsoft's supported on-premises browser-hosted Office experience, forcing organizations that rely on in-browser editing on their own servers to choose between migrating to Microsoft 365, adopting desktop alternatives, or operating unsupported software. Discussions on WindowsForum.com cover migration planning, hybrid scenarios involving Exchange Server and Copilot, and the broader implications of Microsoft's web-first push.
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    Microsoft’s Web‑First Push: Sway Desktop Retired, Office Online Server Ends

    Title: Microsoft isn’t killing Word, Excel or PowerPoint — but it is pulling the plug on several Windows desktop apps and pushing everything to the web By: [Your Name], Senior IT Writer — WindowsForum.com Date: January 8, 2026 Lede Microsoft is accelerating a multi-year push to web-first...
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    • microsoft 365 migration office online server sway desktop web first
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    • Forum: Windows News
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    Office Online Server Retirement 2026: Plan Your Migration to Microsoft 365

    Microsoft has confirmed that Office Online Server (OOS) — the on‑premises engine that powered in‑browser Word, Excel, PowerPoint and OneNote hosting inside customer datacenters — will be retired and reach end‑of‑support on December 31, 2026, forcing organizations that relied on local browser...
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    • microsoft 365 migration office online server on-premises
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    • Forum: Windows News
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    Microsoft retires Office Online Server by 2026: Plan migration to 365 Copilot

    Microsoft’s decision to retire Office Online Server (OOS) by December 31, 2026 redraws the map for on‑premises browser‑based Office experiences and crystallizes a broader strategy: funnel engineering toward Microsoft 365 and cloud‑native Copilot capabilities while testing how far those AI...
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    • copilot microsoft 365 office online server on-premises exchange
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    • Forum: Windows News
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    Office Online Server Retirement 2026: Hybrid Migration to Microsoft 365 and On Prem Copilot

    Microsoft’s decision to retire Office Online Server (OOS) by December 31, 2026 redraws the map for on‑premises Office web experiences and pushes enterprises hard toward Microsoft 365 and cloud‑first, AI‑enabled workflows—while simultaneously testing how far Microsoft can extend Copilot into...
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    • copilot on prem hybrid cloud microsoft 365 migration office online server
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    • Forum: Windows News
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    Office Online Server Retirement: Plan Your Migration to Microsoft 365 by 2026

    Microsoft has formally announced that Office Online Server (OOS) — the on‑premises product that delivered browser‑based Word, Excel, PowerPoint and OneNote to enterprise datacenters — will be retired and reach end of support on December 31, 2026, forcing organizations that require in‑browser...
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    • cloud migration microsoft 365 office online server on-premises
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    • Forum: Windows News
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    Office Online Server Retirement 2026: Plan Your Migration to Microsoft 365

    Microsoft has confirmed that Office Online Server (OOS) will be retired and reach end of support on December 31, 2026, a move that removes Microsoft’s supported on‑premises browser-hosted Office experience and forces organizations that rely on in‑browser editing on their own servers to choose...
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    • microsoft 365 migration office online server on-premises
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    • Forum: Windows News
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    CVE-2025-54904: Excel Use-After-Free Could Allow Local Code Execution

    Microsoft's advisory confirms a use‑after‑free flaw in Microsoft Excel that can lead to local code execution when a specially crafted spreadsheet is opened, creating a potentially serious escalation path on unpatched systems. Overview This vulnerability, tracked as CVE‑2025‑54904, is listed in...
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    • applocker attack vector cve-2025-54904 cybersecurity edr excel excel vulnerability local code execution memory issues mitigation office online server office vulnerabilities patch management privilege protected view remediation security updates use-after-free vulnerability feeds
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    • Forum: Security Alerts
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