5 Appendix A: Product Behavior

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 Client

  • Windows NT operating system

  • Windows 2000 Professional operating system

  • Windows XP operating system

  • Windows Vista operating system

  • Windows 7 operating system

  • Windows 8 operating system

  • Windows 8.1 operating system

  • Windows 10 operating system

  • Windows 11 operating system

Windows Server

  • Windows NT

  • Windows 2000 Server operating system

  • Windows Server 2003 operating system

  • 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

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 2.1.5: Windows Media Player 6.4 specifies the Internet host name in the c-dns field.

<2> Section 2.1.10: On Windows Vista and Windows 7, c-os is set to "Windows".

<3> Section 2.1.25.2: Windows Media Player 6.4, Windows Media Format 7.0 SDK, Windows Media Format 7.1 SDK, and Windows Media Player for Windows XP never specify status code 210.

<4> Section 2.5.1: Windows Media Player 6.4 specifies its own IP address in the c-ip field. Windows Media Format 7.0 SDK, Windows Media Format 7.1 SDK, and Windows Media Player for Windows XP specify their own IP address in the c-ip field depending on the current setting of a configuration value in the user interface.

<5> Section 2.5.1: Windows Media Player 6.4, Windows Media Format 7.0 SDK, Windows Media Format 7.1 SDK, and Windows Media Player for Windows XP never include the three optional fields.

<6> Section 2.5.3: Windows Media Format 9 Series SDK, Windows Media Format 9.5 SDK, Windows Vista, and Windows 7 do not include the "contentdescription" and "client-logging-data" syntax elements in the XML-format logging message when using RTSP [MS-RTSP].

<7> Section 2.6.2: Windows Media Format 9 Series SDK, Windows Media Format 9.5 SDK, Windows Vista and later do not include the "contentdescription" and "client-logging-data" syntax elements in the XML-format logging message when using RTSP [MS-RTSP].

<8> Section 2.6.2: When going through a proxy, Windows Media Services on Windows Server 2003 operating system with Service Pack 1 (SP1), Windows Server 2008, and Windows Server 2008 R2 duplicate the "<c-channelURL>", "</c-channelURL>", "<cs-media-role>", and "</cs-media-role>" tags. For each tag that is duplicated, the duplicate tag immediately follows the original tag.