6 Appendix A: Product Behavior

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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.

  • Windows Server 2008 operating system

  • Windows Server 2008 R2 operating system

  • Windows Server 2012 operating system

  • Windows Server 2012 R2 operating system

  • Windows Server 2016 operating system

  • Windows Server operating system

  • Windows Server 2019 operating system

  • Windows Server 2022 operating system

  • Windows Server 2025 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 1.4.2:  Windows Server 2008 R2 operating system supports the WDS Multicast Session Initiation Protocol using UDP.

<2> Section 2.2: Windows Server 2008 R2, Windows Server 2012, and Windows Server 2012 R2 listen for incoming requests on the UDP port.

<3> Section 2.2.1: Windows 7 operating system, Windows 8 operating system, and Windows 8.1 operating system send the Cap variable.

<4> Section 2.2.1: Windows Server 2008 R2, Windows Server 2012, and Windows Server 2012 R2 send the SecMode variable.

<5> Section 2.2.1: Windows Server 2008 R2, Windows Server 2012, and Windows Server 2012 R2 send the UserSid variable in the reply packet.

<6> Section 2.2.2.1: Windows clients do not send this Option.