Introduction - Microsoft

Support for the server-side elements of this protocol is not available for Windows Vista or Windows Server 2008. Section 1.7: HTTP/1.1 clients in Windows set the PeerDist version parameter to 1.1 except for clients in Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2 that set the PeerDist version parameter to 1.0. ................
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