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MS-MDE2 Request/Enrollment version 7.0 documentation lacking

Jordan Montgomery 0 Reputation points
2025-07-30T14:46:01.5766667+00:00

After a recent Windows update, as best I can tell, Windows 11 24H2 26100.4484, MS-MDE2 Discovery Messages are being sent with RequestVersion 7.0. The MS-MDE2 documentation does not list this version directly, for instance https://dori-uw-1.kuma-moon.com/en-us/openspecs/windows_protocols/ms-mde2/36e33def-59ab-484f-b0bc-701496346925 says:

RequestVersion: The value MUST be set to 1.0, 2.0, 3.0, 4.0, 5.0, or 6.0.<20>

Likewise, EnrollmentVersion lists values up to 6.0: https://dori-uw-1.kuma-moon.com/en-us/openspecs/windows_protocols/ms-mde2/aa198049-e691-41f9-a45a-b973b9089be7

Version 7.0 is mentioned in this section only: https://dori-uw-1.kuma-moon.com/en-us/openspecs/windows_protocols/ms-mde2/3ea67409-e871-47cc-9a06-1fcb51bffb40

This protocol update and deviation from the specification is a surprising and potentially breaking change given how protocol versions are generally allowlisted by applications implementing a given protocol. Should servers implementing this protocol simply allow higher versions even if not listed in the specifications?

Windows development | Windows Open Specifications

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  1. Sreekanth Nadendla 791 Reputation points Microsoft Employee Moderator
    2025-08-14T15:45:20.28+00:00

    Hello Jordan,
    MS-MDE2 Open Specifications protocol document will be updated with missing version details for 7.0. Let us know if you've found any additional discrepancies.

    Regards,

    Sreekanth Nadendla

    Microsoft Windows Open Specifications

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