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Microsoft defender for Endpoint - windows Server 2025 are showing as Workstation in the Device type.

Eric 0 Reputation points
2026-06-11T09:43:22.72+00:00

As per the Microsoft official document the rolling out for support of Windows server 2025 is started from February 2025. Since, it's been a year now, for the servers OS version which is windows 2025 are showing as Workstation for few them and their onboarding states as 'can be onboarded'. We have verified all the pre requisite check are in place. Total out of 5 servers among them only 1 server is showing the right information, rest all 4 are like above mentioned and also there security/ engine or platform version data are not visible.

How can this be fixed or is this a known issue ??

Microsoft Security | Microsoft Defender | Other
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  1. Burak VAROL 866 Reputation points
    2026-06-13T20:24:06.46+00:00

    Hi @Eric ,

    This behavior typically means those devices are not fully onboarded. In Defender for Endpoint, devices showing “Can be onboarded” are usually discovered devices (no active sensor), which is why they appear as Workstation and don’t show engine/platform/security data. Since 1 out of 5 servers reports correctly, this points to a device-level issue, not a Windows Server 2025 support limitation.

    I recommend:

    If everything looks correct and the issue persists, this likely requires a Microsoft support case, as the portal may not be properly classifying those devices after onboarding.

    Regards,
    Burak V.

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