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I've found out how to have multiple sessions per user, but I need multiple connections to ONE session, like the program TeamViewer is able to do, where multiple people can connect to 1 computer, and see the same windows, etc.

I am running Windows Server 2008 R2.

Any help on this would be greatly appreciated,


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What sort of environment are you working in? Do you just need this across a LAN or are you trying to punch through firewalls? Are the users on the host machine running a client or server OS? Which Operating System(s)? – Cypher Nov 11 '10 at 2:00

The following instructions apply to Windows XP/2003/Vista/2008/7/2008 R2. Please note that licensing for multiple active sessions on Windows is available only for the server editions (2003, 2008, 2008 R2). For desktop licensed Windows'es (such as XP/Vista/7) you might wanna Google for how to force Windows to allow multiple RDP sessions, and make sure you don't do something illegal.

To have multiple people in the same session (as in they all control the same desktop, or watch another person doing something):

Open Local Group Policy Editor by typing gpedit.msc in run or cmd.

Enable "Set rules for remote control of Remote Desktop Services user sessions" in the Local Group Policy Editor, then reboot. The setting is under one of these paths depending on your OS:
Windows 2008/2008 R2
[Computer Configuration/Administrative Templates/Windows Components/Terminal Services/Terminal Server/Connections]
Windows Vista/7
[Computer Configuration/Administrative Templates/Windows Components/Remote Desktop Services/Remote Desktop Session Host/Connections]
Windows XP/2003
[Computer Configuration/Administrative Templates/Windows Components/Terminal Services]

Optionally, enable "Restrict Remote Desktop Services users to a single Remote Desktop Services session"
in [Configuration\Administrative Templates\Windows Components]....same paths in Local Group Policy Editor as above.


Create an user account for each person who is going to connect, with passwords, permissions and everything;
Make sure you have the ability to have multiple RDP sessions to the same Windows machine by actual testing. If not, find a solution (like buy a license, or google for how to raise the limit of maximum active RDP connections).

Now every time you want to do the desktop sharing thing:

Have them log in through RDP (the target session has to be a RDP session too).

Via [Task Manager/Users] each person in a RDP session is going to have to right click on the target (common) RDP session and click "Remote Control".

Note: localhost RDP connections can be made using localhost IP's:,, etc.

Note2: You can enable "Set rules for remote control of Remote Desktop Services user sessions" for an individual account, for security reasons, by altering this setting while logged-on on the target account, and instead of going to "Computer Configuration" root, start from "User Configuration".

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I assume you are talking about Windows here, so VNC is the easiest way to do this (VNC is actually the way to do this on Linux too, but VNC is much more flexibe on Linux than on Windows). That way everyone can share the same console session of whichever machine you're connected to.

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Yes, thank you, I totally forgot to say what OS I was running on, I edited my question. Anyways, thanks for your help, but I'd really like to know how to do this on Remote Desktop, because the server needs all the RAM and CPU that it can give for the applications running on it. – René Nov 11 '10 at 3:52
@René Truth be told, you can't really do this with Remote Desktop. It's purpose is to allow many people to have their own individual desktop/session, not to allow many people to view one desktop. Mark has given you what is probably the best way to do this. – RobM Jan 19 '11 at 0:35

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