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Currently, I have a Windows 2003 Server that I connect remotely using Remote Desktop as administrator.

It allows two concurrent sessions for the administrator plus a console session. How can I increase this limit to 5?

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up vote 4 down vote accepted

Windows 2003 by default allows the RDP connections to administer the server remotely. But if you want more users to login and work on the same, you need to make it as a Terminal Server and you also need to buy licenses for your clients that connect to it.

It is called CALs and it can be either per device or per user. So if you have 5 licenses, you'll be able to connect to that server the way you want.

But I'm not sure whether this is what you are looking for.

Go to Run Command->Type gpedit.msc->Click on COmputer Configuration ->Administrativr Tempelate->Windows Component->Terminal Service and Increase the "Limit Number of COnnection" that's ok

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With 5 CALs, you can connect 5 sessions in addition to the 2 RDP sessions. WIN2003 must be a Standard version (not Web). You need to buy a package for 5 CALs or more, and prices do vary, so do some marketing research first. – harrymc Mar 10 '10 at 13:39
Yhea yhea yhea... of course – r0ca Mar 10 '10 at 13:41
@harrymc, What's the approx cost 5 CALS? – Pacerier Mar 13 '15 at 17:16
@r0ca, So does it mean that we can only use those sessions to "administer" the server? If we start using them for "work" it is a violation? – Pacerier Mar 13 '15 at 17:17
@Pacerier: It's not a violation, just limited to two sessions at any time. – harrymc Mar 13 '15 at 19:33

Go to "Start" => "Administration Tools" => "Terminal Services Configuration"

Open up the "Properties" of "RDP-tcp" in the connections tree and selected the "Network Adapter" tab:

"Unlimited connections" is grayed out
In "Maximum connections" You can change the value to "1" using the arrows
However, I can not increase the value above "2" with the arrows
So type in 4 and click apply. But the value will not stick.
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Actually you will need to install Terminal server on your system. Go to Administrative tools, then Configure your server, and follow the wizard to make your system a Terminal server. At that time, the concurrent connections are virtually unlimited.

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