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Microsoft released Remote Desktop Connection 6 (Terminal Services) Client. It is strongly advises windows 2003 server or Windows XP user updated current remote desktop connection to the latest version 6.

Remote Desktop Connection 6 Feature:
- Ability to connect to a Vista or Longhorn Server machine using Microsoft’s new Network Layer Authentication technology via Windows XP or Windows 2003
- Provides a way to use any new Terminal Services features introduced in Microsoft Windows Vista and Microsoft Windows Server Code Name “Longhorn” to connect a computer running Microsoft Windows XP with Service Pack 2 or Microsoft Windows Server 2003 with Service Pack 1.”
Previous remote desktop connection on vista having connection problem to Windows XP or Windows 2003 which ” a warning saying that it couldn’t properly authenticate the PC “, if you updating the latest remote desktop 6, you might not facing the warning problem again.
Here is download links for Remote Desktop Connection 6 for various OS:














January 4th, 2007 at 11:51 am
I think you are missing the security implications. Previous versions of MSTSC actually connected to the remote system before validating the identity of the client user. Then it gives a lengthy period of connection until it times out if you do not log in. Since this is a service running under Windows, that pretty much gives a hacker a broad opportunity to inject some yet unknown malware into the system and learn how to take over control.
By forcing the authentication before the user connects, the root level is never exposed to a malicious client until they provide valid authentication credentials. This newer method is therefore more secure.
The fact that the system “bypassed that logon dialog” is due to the fact that it already validated your identity making the logon dialog superfluous. Why login a second time when you have already been authenticated?
It is not necessarily a step that Microsoft is known for taking. I applaud their efforts of considering some if not all of the little things that make their systems vulnerable. Microsoft is not bypassing anything with the newer security model.
June 13th, 2007 at 3:20 am
Installing MSTSC 6.0 (Remote Desktop) on Windows XP SP1
Since it is not officially supported, and the installer croaks under SP1,
I had to hack my way around it a bit, and discovered that the programmers actually did
code the program, and even their installer to work under SP1 maybe even with no SP,
but the installer’s package manager itself was doing the check for SP2 before the actuall
program installer gets run…
I PROVIDE NO WARRANTY THAT THIS WILL NOT BREAK YOUR ENTIRE SYSTEM,
EAT ALL YOUR POTATO CHIPS, OR DRINK YOUR BEER.
1. make a backup copy of mstsc.exe and mstscax.dll from your windows\system32
put them somewhere safe (you can still run them separately after the 6.0 install)
2. delete mstsc.exe and mstscax.dll from your windows\system32 and windows\system32\dllcache.
both files must be deleted from both locations very quickly, or the Windows File Protection
will notice, and copy them back again.
You will get an warning window about unrecognized files, just click Cancel.
3. run the MSTSC6 installer for XP (downloaded from http://support.microsoft.com/kb/925876)
Watch closely to see where it is unpacking the files, usually the root
of some drive, with a really long directory name like 04d6787f2a5930bc357d631f3a.
When you get the error message about your SP level, DO NOT close the window!
4. Find the directory where it unpacked everything (EX: C:4d6787f2a5930bc357d631f3a)
If you can’t find it, search all local drives for LHMSTSC.exe
5. Copy the directory SP2GDR to somewhere safe, like \temp.
6. Close the error message window. The really long-named directory will be deleted.
7. copy the single file from SP2GDR\ip to SP2GDR\
8. using Windows Explorer, from SP2GDR, right click on lhtsc.inf and select Install.
TA DA!