Concurrent Remote desktop sessions. Not as easy as it may sound.

Tuesday, May 13, 2008 11:18:13 AM (GMT Standard Time, UTC+00:00)

You’d think something as simple as concurrent remote desktop sessions should be something that’s reasonably straight forward and logic wouldn’t you?  I certainly did.  It’s something I’ve got to work before at home on PC’s that aren’t connected to a domain however for some reason; I just cannot get it to work when connected to a Windows 2003 domain!  It’s so frustrating!  I need this access and VNC isn’t accessible when using a screen reader!

So, what should you be able to do to get around this?  These are the steps I have written down.
Firstly, I got a termserve.dll from a Windows XP SP2 Beta build.
I installed this in c:\windows\system32\ and c:\windows\service pack releases\i386\
I then changed a few keys in the group policy editor to allow for remote log ons.  Go to gpedit.msc, go to computer configuration, administrative templates, Windows components, Terminal Services, “Restrict terminal sessions to a single session. You can also go to computer management, Windows settings, Local policies, User rights assignment and then “Allow log in through terminal services.  Add users and administrators to this.  Alternatively, just go to control panel, users and groups, advanced and then add the required users to the terminal services remote access group.
In the registry, you need to do some editing too. First, go to HKey_Local_machine \ Software\ Microsoft\ Windows NT\ Current Version\ Winlogon and change the value of Allow Multiple TS Sessions to 1.  Also change the value at HKey_Local_Machine\System\ControlSet 001\ Control\ Terminal Server\ Licensing Core\ called Enable Concurrent Sessions to 1.Note, you may also need to create  a value called PolicyACOff with a value of 5.
Oh, one more thing, go into services.msc and start the fast user switching compatibility service and in the properties, set this to start automatically at boot.

I’ve spent hours on this now with no success.  So, as you can probably imagine, I’m very frustrated!  I’d love to find a way around this!

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