以下のサイトを最初に試したが、うまくいかなかった。
若干の間違いと記述不足がある。
補足すると、
・消すのは %windir%\System32\dllchache 配下の方であり、置き換えるのは %windir%\System32 配下の方。
・同じユーザでは接続できない。複数のユーザ（Administrator以外に2つ以上）を作成し、別々のユーザで接続しないといけない。
・リモートデスクトップを無効／有効化、サービスの無効／有効化は不要？
http://www.golod.com/2005/10/enabling-multiple-remote-desktop-sessions-in-windows-xp-professional-and-media-center-edition-2005/
Enabling Multiple Remote Desktop Sessions in Windows XP Professional and Media Center Edition 2005
If you have ever used a real remote computer system like Citrix, then you have probably been craving multiple Remote Desktop sessions since you first fired up Windows XP Professional and/or Media Center Edition. Here is a HACK (translated: USE AT YOUR OWN RISK), to enable multiple Remote Desktop sessions on your XP Pro or MCE 2005 box:
NOTE: You will have to have knowledge of the Windows operating system and more specifically the Windows Registry. If you have no experience with the registry, then I would recommend you find someone who does or leave these alone. I do not make any kind of warranty that this will work for you or your friends. This is provided for entertainment purposes only. Don’t call me if your computer stops working. Got it?
1. Print these directions so that you have them to work from.
2. Restart your computer in Safe Mode - Follow this link to learn how to restart Windows XP in Safe Mode
3. Turn off/disable Remote Desktop Connection (RDC) and Terminal Services
1. Right click My Computer
2. Select Properties
3. Click on the Remote tab at the top of the window
4. UNCHECK the box next to, “Allow users to connect remotely to this computer“
5. Click OK
6. Go to Start -> Control Panel -> Administrative Tools -> Services
7. Find Terminal Services in the list
8. Right click on Terminal Services and click Properties
9. In the Startup Type box, select Disabled
10. Click OK to close the window
# Next you will replace the current version of the Terminal Services DLL (termsrv.dll) with an unrestricted version from a previous release of Terminal Services.
1. Here is a copy of the Terminal Services DLL - Save it to your Desktop or other suitable location
2. Using a file manager like Windows Explorer open C:\Windows\system32\dllcache
3. Rename the file termsrv.dll to termsrv_dll.bak or whatever you would like.
4. Copy the downloaded termsrv.dll file (the one you just downloaded from the web) to C:\Windows\system32\dllcache
5. Open the C:\Windows\system32 folder
6. Delete the file termsrv.dll in C:\Windows\system32
# Now we can edit the Windows Registry to enable more than one RDP connection. Go to Start -> Run and type regedit - Hopefully you knew that already
# Go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\Licensing Core
# Add a DWORD Key named EnableConcurrentSessions and give it a value of 1
# Close the Registry Editor window
# Go to Start -> Run and type gpedit.msc to run the Group Policy Editor
# Browse to Computer Configuration -> Administrative Templates -> Windows Components -> Terminal Services and double click Limit number of connections
# Select the Enabled button and enter the number of connections you would like to enable….at least 2.
# Restart Windows
# Right click My Computer and select Properties.
# Click on the Remote tab at the top of the window
# CHECK the box next to, “Allow users to connect remotely to this computer“
# Click OK
# Go to Start -> Control Panel ->Administrative Tools -> Services. Select Terminal Services from the list and double click it or right-click -> Properties. Set the Startup Type to Manual.
#
# Restart Windows/Computer
You should be good to go.
なお、以下もわかりやすい。
http://sig9.com/articles/concurrent-remote-desktop
To get Concurrent Sessions in Remote Desktop working, follow the steps below exactly:
1. Download the termserv.zip file below and extract it somewhere. (You have to be registered to see the file)
2. Reboot into Safe Mode. This is necessary to remove Windows File Protection.
3. Copy the termserv.dll in the zip to %windir%\System32 and %windir%\ServicePackFiles\i386. If the second folder doesn't exist, don't copy it there. Delete termserv.dll from the dllcache folder: %windir%\system32\dllcache
4. Merge the contents of Concurrent Sessions SP2.reg file into the registry.
5. Make sure Fast User Switching is turned on. Go Control Panel -> User Accounts -> Change the way users log on or off and turn on Fast User Switching.
6. Open up the Group Policy Editor: Start Menu > Run > 'gpedit.msc'. Navigate to Computer Configuration > Administrative Templates > Windows Components > Terminal Services. Enable 'Limit Number of Connections' and set the number of connections to 3 (or more). This enables you to have more than one person remotely logged on.
7. Now reboot back into normal Windows and try out whether Concurrent Sessions in Remote Desktop works. It should!
以下には、実行すればパッチがあたるexeファイルがあるようだが、怖くて試せない。
http://www.kood.org/terminal-server-patch/
あくまで、知的好奇心と実験。
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