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Hi , need to update a server from 2012 R2 to 2025

Reza R 0 Reputation points
2026-03-20T18:38:39.0566667+00:00

I have checked the server spec it seems I have more than minimum trequirement .

I want some help in purchasing he windows server 2025 software and upgrade it while not losing any data.

Thanks

Windows for business | Windows Server | Devices and deployment | Set up, install, or upgrade
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  1. Domic Vo 19,580 Reputation points Independent Advisor
    2026-03-20T19:18:10.8566667+00:00

    Hello Reza R,

    If your server meets the hardware requirements, the next step is to purchase a valid Windows Server 2025 license through official Microsoft channels or an authorized reseller. Since you mentioned you want to upgrade without losing data, the supported way is an in‑place upgrade. Microsoft allows direct upgrades from Windows Server 2019 and 2022 to Windows Server 2025, provided the edition matches (Standard → Standard, Datacenter → Datacenter).

    Before starting, make sure you have a full backup of the system and configuration. Even though in‑place upgrades are designed to preserve roles, data, and settings, there is always a risk of incompatibility or failure. You should also update all drivers and firmware to the latest versions before running setup.

    To perform the upgrade, mount the Windows Server 2025 installation media, run setup.exe, and choose the option to keep files, applications, and settings. The installer will check compatibility and proceed with the upgrade. After the upgrade, verify that all server roles are functioning correctly, especially if you are running Active Directory, Hyper‑V, or Remote Desktop Services.

    If you are currently on an older version than Server 2019, you cannot jump directly to 2025. You would need to upgrade in stages (for example, 2016 → 2019 → 2025).

    For licensing, a MAK or KMS key from your Volume Licensing agreement or a retail key from Microsoft will be required. If you are in a corporate environment, coordinate with your licensing administrator to ensure the correct activation method is used.

    I hope you've found something useful here. If it helps you get more insight into the issue, it's appreciated to accept the answer. Should you have more questions, feel free to leave a message. Have a nice day!

    Domic Vo.

  2. Q&A Assist
    2026-03-20T18:38:52.4933333+00:00
    AI generated content. This question contains an answer created with AI from Q&A Assist. Learn more

    Windows Server 2012 R2 can be upgraded in-place directly to Windows Server 2025 on nonclustered systems, and data, roles, and settings can be preserved if the supported upgrade path and in-place upgrade method are used.

    Key points and steps:

    1. Confirm supported upgrade path
      • Windows Server 2012 R2 → Windows Server 2025 is a supported in-place upgrade path for nonclustered systems.
      • This lets the server move directly from 2012 R2 to 2025 without intermediate versions.
      • Some roles and features may not support in-place upgrades; these may require separate migration.
    2. Back up before doing anything
      • Create a full system backup and separate backups of important data before starting.
      • This is strongly recommended for any in-place OS feature upgrade, clean install, or migration.
    3. Decide on upgrade vs. clean install/migration
      There are three main options:
      • In-place OS upgrade (feature update):
        • Keeps original settings, server roles, features, and data.
        • Fastest way to move to Windows Server 2025 on a nonclustered system.
        • Works best with VMs and systems that do not require special OEM drivers.
      • Clean install:
        • Install Windows Server 2025 on a new disk/VM or wipe and reinstall, then restore data and reconfigure roles.
      • Migrate:
        • Stand up a new Windows Server 2025 machine and move roles/data from the 2012 R2 server.
    4. Obtain Windows Server 2025 media
      • Purchase Windows Server 2025 through normal commercial channels (volume licensing, OEM, or retail) and obtain installation media (ISO, USB, or DVD).
      • For evaluation/testing, Windows Server 2025 media is available via Windows Server Evaluations.
    5. Perform an in-place upgrade (if chosen)
      High-level process:
      • Ensure the server is nonclustered if using the direct 2012 R2 → 2025 path.
      • Mount or attach the Windows Server 2025 ISO (or insert bootable media).
      • Run setup from within Windows Server 2012 R2.
      • When prompted, choose the option to keep files, settings, and apps (if available for the roles/features installed).
      • Follow the setup wizard to complete the upgrade.
    6. Post-upgrade checks
      • Verify that all roles, applications, and services are working as expected.
      • Confirm that data is intact and accessible.
      • Apply the latest cumulative updates for Windows Server 2025.
    7. Support lifecycle note
      • Support for Windows Server 2012 R2 has ended; moving to Windows Server 2025 provides current features and security updates.
      • Windows Server 2025 is supported until October 2034.

    For detailed step-by-step instructions on performing an in-place upgrade and for additional upgrade/migration options, refer to the Windows Server upgrade and installation guidance in the references.

    References:

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