Link to home
Start Free TrialLog in
Avatar of dneuhaus
dneuhausFlag for Switzerland

asked on

Only two Administrative RDP Sessions instead of three possible

Hi,
If I will connect with the third User on a Windows Server 2003 System, I get the Message "The connection was ended because of a network error..."

I know that Terminal Services in Administrative Mode can handle two simultanous RDP connection plus a third in console mode.

My Problem is that I can connect just two sessions. It makes no difference if I connect twice without /console or one with /console - always just two connections possible. I checked the Eventlog and the GPO and the Terminal Services MSC - All Settings are the same as the other houndreds of 2003 Servers we have. Only this one let us connect twice - all other act as espected: two "normal" connection plus one /con connection are possible.

OS: Windows Server 2003 EN / SP1 (32-Bit)

Thanks for your help
Avatar of Pber
Pber
Flag of Canada image

The /console switch will connect to an existing console session if present and as long as you login with the same userid that is logged into the console.  If both situations aren't true, you will connect as a normal RDP session and be limited to 2 sessions.
By default RDP only allow 2 connections at the same time, you would have to install TS services in application mode  to allow more than 2 sessions.

ATIG,

As dneuhaus mentioned, you actually get three sessions in Administrative mode.  Two remote RDP session and one console session that can be accessed remotely via RDP as per my previous post.

http://support.microsoft.com/kb/278845
Avatar of dneuhaus

ASKER

Dear Pber, sorry - but your comment is rubbish!
You can ALWAYS connect to a console session in W2K3. If a user is connected to the console of the server you will be prompted to logout the currently active session (if you have the corresponding rights!)
As I sayd - just one of hundred W2K3 act as described

@ATIG, yes I know - just read my Question - you can connect with two sessions PLUS one with the /console switch.

Try it:
1) connect with the first user - ok
2) connect with the second user - ok
3) connect with the third user - not ok!
4) connect with the third user with mstsc /v:"servername" /con - ok!
Bear in mind that of you use the /console option, any one actually sat at the machine will have their session terminated.
500 Point ar not for free!

I'm not new with Terminal Services and I will assure that I have really checked the GPO and mutch other possible errors I can had with this Machine.

But I'm very glad to get some tips to solve that problem
You can get 2 RDP sessions and a Console session.  Total of 3
Yes - but just 2 simultanous sessions will work on that server (as I explained)

One "normal" and one "console" or
two "normal"

but not 2! - that is my problem!
ASKER CERTIFIED SOLUTION
Avatar of Pber
Pber
Flag of Canada image

Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
@Pber,
You get the 500 Points!

The Reg Key HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp\MaxInstanceCount was set to "2" instead of "ffffffff"

It doesn't represent the Number of simultaneous connections setting in the TS msc - but anyway - it resolved.

Thanks a lot
Excellent.  Glad it's fixed.