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The information in this specification is applicable to the following Microsoft products or supplemental software. References to product versions include updates to those products.
The terms "earlier" and "later", when used with a product version, refer to either all preceding versions or all subsequent versions, respectively. The term "through" refers to the inclusive range of versions. Applicable Microsoft products are listed chronologically in this section.
Windows 8.1 operating system
Windows 10 operating system
Windows 11 operating system
Exceptions, if any, are noted in this section. If an update version, service pack or Knowledge Base (KB) number appears with a product name, the behavior changed in that update. The new behavior also applies to subsequent updates unless otherwise specified. If a product edition appears with the product version, behavior is different in that product edition.
Unless otherwise specified, any statement of optional behavior in this specification that is prescribed using the terms "SHOULD" or "SHOULD NOT" implies product behavior in accordance with the SHOULD or SHOULD NOT prescription. Unless otherwise specified, the term "MAY" implies that the product does not follow the prescription.
<1> Section 2.1: Not supported in Windows 8.1.
<2> Section 2.1: Windows clients forward a platform parameter containing the value "WoA".
<3> Section 2.1: In Windows 8.1, the user-agent header value is "Enrollment"
<4> Section 2.1: Not supported in Windows 8.1.
<5> Section 2.1: Not supported in Windows 8.1.
<6> Section 2.1: The MDM-GenericAlert header is not supported in Windows 8.1 or Windows 10 v1507 operating system.
<7> Section 2.1: Not supported in Windows 10 v1703 operating system and earlier.
<8> Section 2.1: Not available in Windows 10 v21H1 operating system and earlier.
<9> Section 2.1: Not available in Windows 10 v21H1 and earlier.
<10> Section 2.1: Not available in Windows 10 v1909 operating system and earlier.
<11> Section 2.2.4.3: Not supported in Windows 10 v1809 operating system and earlier.
<12> Section 2.2.5.1: Not supported in Windows 10 v1809 and earlier.
<13> Section 2.2.5.3: MaxMsgSize is not supported in the SyncHdr in Windows 8.1 or Windows 10 v1507 for sending large objects to the server.
<14> Section 2.2.7.2: Alert type 1222 for sending large objects to the server is not supported in Windows 8.1 or Windows 10 v1507. For more information about handling large objects, see sections 6 and 7 in [OMA-DMP1.2.1].
<15> Section 3.1.6: Windows 10 v2004 operating system and earlier did not obey any rate-limiting requests from the device management service.
<16> Section 3.2.5.1: Servicing May 2022, support for user sessions on Windows 11, version 22H2 operating system (version 2) multi-session Edition only in Windows Virtual Desktop was backported to Windows 11 (version 1). Servicing March 2023, the previous servicing update was backported to Windows 10 v2004 (v20H1) and later.
<17> Section 3.2.5.1.3: EnrollmentVersion value 5.0 is supported only in Windows 11 v22H2 or later. See [MS-MDE2].
<18> Section 3.2.5.1.6: Available on Windows 11, version 24H2 operating system and later.
<19> Section 3.2.5.1.6: Available on Windows 11, version 24H2 and later.
<20> Section 3.2.5.1.6: Available on Windows 11, version 24H2 and later.
<21> Section 3.2.5.1.6: Available on Windows 11, version 24H2 and later.
<22> Section 6: The hooks are available only on x86 SKUs of Windows. Implementation of the hooks on a device is not defined in this document.