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Patch Windows 2008 Terminal Server to allow more than 2 concurrent sessions
Author: Remko21 Oct
Well it took some time but I patched Terminal Server for Windows 2008 to allow unlimited sessions in Remote Administration mode.
This patch is for 32 bit English version. In order to install it you need to perform the steps below. Before you start please check if using this patch is allowed according to your country’s law and your license agreement.
- Install v-patch
- From the vpatch directory launch vpatchprompt.exe
- vpatchprompt will ask you for the following files:
- Patch file (the .pat file).
- Source file (termsrv.dll).
- Destination file (the patched termsrv.dll). - Stop the “Terminal Services” service.
- Take ownership of c:\windows\system32\Termsrv.dll
- Give Administators full control of this file and rename it to Termsrv.dll.old
- Place the patched file in the system32 folder
- Restart “Terminal Services” service
EDIT: The download has been replaced with a new file containing the proper md5 hashes (see noone’s comments)
VPatch file: Windows Server 2008 VPatch file (1797) (of termsrv.dll build 6.0.6001.18000 English language)
See also:
- www.remkoweijnen.nl/blog/2008/08/31/patch-windows-2003-terminal-server-to-allow-more-than-2-concurrent-sessions/
- www.remkoweijnen.nl/blog/2008/06/14/mutiple-concurrent-terminal-session-on-vista-sp1/
Upcoming:
- Terminal Server Patch for Windows XP X64
convert this post to pdf.
Please consider donating something (even a small amount is ok) to support this site and my work:
Filed under: Terminal Server, Windows 2008
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33 Responses for "Patch Windows 2008 Terminal Server to allow more than 2 concurrent sessions"
Thanks for the digging but it didn’t work for this version so below is the diff.
d605031e225aaccbceb5b76a4f1603a6 *termsrv.dll
Version 6.0.6001.18000 English
fc.exe /b in out:
00018AD1: 8B 33 mov edi, eax -> xor edi, edi
00018AD2: F8 FF
0001AEC0: 8B 33 mov edi, eax -> xor edi, edi
0001AEC1: F8 FF
0001B29F: 0F 90 jg 6e82703d -> nops
0001B2A0: 8F 90
0001B2A1: 98 90
0001B2A2: B1 90
0001B2A3: 00 90
0001B2A4: 00 90
@noone: please check this registry key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server, value UserSessionLimit. What is it’s value?
Also check if you have a MaxInstanceCount value.
I wasn’t clear enough maybe. The patch didn’t _apply_ without modifying VPatch. Please check the md5 for your termsrv.dll and if it’s the same with mine retry the patch you provided. I’ve used the last VPatch from the site.
I haven’t tested this patch to see if it will work properly but I’ll trust you until I’ll get to the 2008 machine to see for my self. I was just giving back some info
.
strange, the MD5 hashes of my files are the same as in the vpatch file. However I checked the original file in my vista installation (which should be the exactly the same as in 2008 because they share the kernel) and this gives exactly your md5.
I had several patch attempts before I had everything working so maybe I saved a patched version as the original…
It doesn’t matter for the result though because the version with the final patch was based on the original. I have tested it on 3 different 2008 servers and also with various actions (connect, reconnect, disconnect etc.) and it’s working fine there.
I’ll see if I can do a clean re-install and get the original file from there. For now I assume your file/hash it the correct one (I will upload a new vpatch file).
@noone: I verified with a new installation and the termsrv dll from that installation has the same md5 hash as yours and the dll from my vista installation.
I recreated and uploaded the vpatch file.
[...] Software news by Remko [...]
Nice work Remko!
I tried this one on a Swedish Enterprise version that I am using as my own personal playground, and it worked like a charm.
Though, it took me a couple of minutes to realize that I had to uninstall the Terminal Server Role for this to work.
Great work, thank you very much.
//Mats
>Upcoming:
>Terminal Server Patch for Windows XP X64
Oh! We are still hoping that you will finish it soonest, Remko! Could you please inform us how it is going now? Thank you.
Pasha, don’t worry, Windows 2003 X64 and Windows XP 64 patches will follow.
BTW I suspect that hitting the Paypal donation button might put it up higher in the priority list
Windows 2003 X64 patch is online here: http://www.remkoweijnen.nl/blog/2008/12/09/windows-2003-x64-terminal-server-patch/
Some news for 64 bits version??
Works for 2008 Net Server 64bits?
Hello Remko, excelent blog you have here
I want to ask you how to debug the termsrv.dll? i mean the Terminal Server service? can you explain to us how to “see” what the dll is doing? i know how to doit with a .exe and with a .dll with an specific entry point
Greetings.
Hi Tr4d3r,
If you want to debug termsrv.dll, you just need to have the debugger which can attach to the running process
. Open termsrv.dll in your debugger, and click on “attach to process”. Usually it will be one named svchost.exe. Be careful with it, as it’s a system critical service, and if you terminate it, you’d have to reboot your system.
niiice
hope 64bit 2008 can be done
64bits? are you there?
Any news on 64bits? That would be great!
You are best!
Hope the 2008×64 version!
Thaks for your great work.
waiting a fantastic 2008×64 version.
byee.
Can somebody gives to me the diferences from the original file and the pathched file of termsvr.dll for windows 2008 Server? just like
fc /b original.dll patched.dll
Thanks
Great Job, This is tested on Windows server 2008 x86 and it is working properly.
I have change the registry value to 0 for registry key “fSingleSessionPerUser”
My Termserv.dll version is 6.0.6001.18000 English
Working Great. Thanks a lot Remko.
As always, great job, any news on the x64 version??
Great work. Any chance for 2008 R2?
hello i’ve made this for server 2008 r2, it is based on remko’s work. It is not 100% tested
Comparing files termsrv.dll y TERMSRV.PATCHED.DLL
000100AF: 0F 90
000100B0: 8F 90
000100B1: 62 90
000100B2: 3D 90
000100B3: 01 90
000100B4: 00 90
0001474C: 8B 33
0001474D: D8 C0
00014A59: 0F 90
00014A5A: 8F 90
00014A5B: 94 90
00014A5C: F4 90
00014A5D: 00 90
00014A5E: 00 90
00018506: 8B 33
00018507: D8 DB
00018508: 85 90
00018509: C0 90
0001850A: 0F 90
0001850B: 88 90
0001850C: C4 90
0001850D: 7C 90
0001850E: 00 90
0001850F: 00 90
I second the motion. 2008 and 2008 R2 64 bit version would be really great!
Any chance it will happen soon?
Hi Renco
Fantastic job, when you can do it for w2008 x64 and w2008 r2 ?
Some forecast for the R2 64-bit?
Here a solution for Windows Server 2008 R2 x64:
http://deepxw.blogspot.com/2009/04/universal-termsrvdll-patch.html
Hope this help.
Locuranet
Time keeps running, did not work.
Here a solution for Windows Server 2008 R2 x64:
http://deepxw.blogspot.com/2009/04/universal-termsrvdll-patch.html
Hope this help.
Locuranet
Windows 2008 R2 please.
The deepxw link doesn’t allow multiple same user sessions. (It allows multiple users beyond 2, but never same user even if fSingleSessionPerUser=0 and fSingleSessionPerUser is policied out.
Is there a patch for a SBS2003 SP2 server?
Termsrv.dll version 5.2.3790.3959
Windows 2008 R2 ????
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