This version is built into Windows XP Professional 圆4 Edition and Windows Server 2003 圆4 & x86 Editions, and also available for Windows XP as a download. It also introduces Transport Layer Security (TLS) 1.0 for server authentication, and to encrypt terminal server communications. This version was introduced with Windows Server 2003, included support for console mode connections, a session directory, and local resource mapping. With this version, the name of the client was changed from Terminal Services Client to Remote Desktop Connection the heritage remains to this day, however, as the underlying executable is still named mstsc.exe. It is supported on Windows 2000, Windows 9x, and Windows NT 4.0. This version was introduced with Windows XP Professional and included support for 24-bit color and sound. This version was introduced with Windows 2000 Server, added support for a number of features, including printing to local printers, and aimed to improve network bandwidth usage.

The T.128 application sharing technology was acquired by Microsoft from UK software developer Data Connection Limited.

Later versions of Windows integrated the necessary support directly. The Citrix-provided DLLs included in Windows NT 4.0 Terminal Services Edition still carry a Citrix copyright rather than a Microsoft copyright. Microsoft required Citrix to license their MultiWin technology to Microsoft in order to be allowed to continue offering their own terminal-services product, then named Citrix MetaFrame, atop Windows NT 4.0. The Terminal Services Edition of NT 4.0 relied on Citrix's MultiWin technology, previously provided as a part of Citrix WinFrame atop Windows NT 3.51, in order to support multiple users and login sessions simultaneously. Version 4.0 īased on the ITU-T T.128 application sharing protocol (during draft also known as 'T.share') from the T.120 recommendation series, the first version of RDP (named version 4.0) was introduced by Microsoft with 'Terminal Services', as a part of their product Windows NT 4.0 Server, Terminal Server Edition. Since the server improvements are not available downlevel, the features introduced with each newer RDP version only work on downlevel operating systems when connecting to a higher version RDP server from these older operating systems, and not when using the RDP server in the older operating system. Microsoft provides the client required for connecting to newer RDP versions for downlevel operating systems. The home versions of Windows do not support RDP. The Terminal Services server is supported as an official feature on Windows NT 4.0 Terminal Server Edition, released in 1998, Windows 2000 Server, all editions of Windows XP except Windows XP Home Edition, Windows Server 2003, Windows Home Server, on Windows Fundamentals for Legacy PCs, in Windows Vista Ultimate, Enterprise and Business editions, Windows Server 2008 and Windows Server 2008 R2 and on Windows 7 Professional and above. ( Learn how and when to remove this template message)Įvery server and professional version of Microsoft Windows from Windows XP onward includes an installed Remote Desktop Connection (RDC) ('Terminal Services') client ( mstsc.exe) whose version is determined by that of the operating system or by the last applied Windows Service Pack. This article may need to better summarize its corresponding main article. Microsoft makes some specifications public on their website. The protocol is an extension of the ITU-T T.128 application sharing protocol. Microsoft currently refers to their official RDP client software as Remote Desktop Connection, formerly 'Terminal Services Client'. By default, the server listens on TCP port 3389 and UDP port 3389. RDP servers are built into the server and professional editions of Windows operating systems but not home editions an RDP server for Unix and OS X also exists (for example xrdp). The user employs RDP client software for this purpose, while the other computer must run RDP server software.Ĭlients exist for most versions of Microsoft Windows (including Windows Mobile but the support has ended), Linux (for example Remmina), Unix, macOS, iOS, Android, and other operating systems.

Remote Desktop Protocol ( RDP) is a proprietary protocol developed by Microsoft Corporation which provides a user with a graphical interface to connect to another computer over a network connection.

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