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Windows Server 2025 in-place upgrade via Windows Update: prerequisites, steps, and limits

Windows Server 2025 Feature Update Download Install (image Microsoft)
Starting in mid-April 2026, Microsoft allows you to upgrade Windows Server 2019 and Windows Server 2022 directly to Windows Server 2025 through Windows Update — no installation media (ISO file or DVD) required. The process is called an in-place upgrade, meaning your installed applications, settings, and server roles remain unchanged while only the operating system version changes. This article covers the prerequisites, the exact registry change you need to make, the step-by-step procedure for both the graphical desktop and the text-only Server Core installation, and the important cases where you must not use this method.

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Enable Windows ReFS boot: Install Windows Server on Resilient File System volumes

Enable ReFS boot on Windows Server volume
Windows Server vNext Insider Preview build 29531 introduces ReFS boot, allowing you to install and start Windows Server from a Resilient File System (ReFS)-formatted boot volume for the first time. This feature brings integrity-level metadata checksums, online corruption repair, block cloning, and 35-petabyte volume scalability to the OS boot partition — capabilities that NTFS cannot match. ReFS boot requires UEFI firmware and a minimum of 2 GB for the WinRE partition. Learn how to enable Windows ReFS boot during Windows Server installation.

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Update Secure Boot certificates on Windows Server and VMs before June 2026

Enable Secure Boot certificate deployment in Group Policy
Microsoft's original Secure Boot certificates — issued in 2011 — begin expiring in June 2026. Unlike Windows 11, Windows Server does not receive these updates automatically via Windows Update. Administrators must manually deploy the 2023 replacement certificates to all applicable servers and Generation 2 virtual machines before the deadline. Systems that remain on the 2011 certificates after expiration enter a degraded security posture and cannot receive future Secure Boot updates.

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Comment installer un serveur SFTP sur Windows Server

Dans cet article, nous verrons ensemble comment installer un serveur SFTP sur Windows Server. J’utiliserai ici Windows Serveur 2022 mais vous pouvez faire de même sur les versions précédentes. Nous utiliserons ici le logiciel open source OpenSSH pour réaliser cette tâche. Pourquoi utiliser un serveur SFTP ? Un serveur SFTP est un moyen sécurisé et …
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