Enable Terminal Server/Multiple RDP Sessions on Windows 10

I got up a requirement to setup Windows 10 in a cloud from where we want to have concurrent users on it at the same time. It is an easy step for System Administrator on Windows Server, however, as being the normal operating system,  it wasn’t easy to fulfill this requirement on Windows 10.

I googled and tried to come up with a solution. I have seen few tools on the internet too but they are not working properly with the latest Windows update too.

In the end, I manage to get it done and thought to share my step on my blog. Hereby, I modify the termsrv.dll file from the System32 folder to get it done.

I tried RDP Wrapper but it didn’t help for the newer version of Windows 10. So the following solution would be convenient.

Solution:

• First backup the DLL file to be on the safe side and take the ownership and provide full rights of termsrv.dll file for your profile.

• After this, you have to stop Terminal Server before modifying it

      net stop termservice

 

• Install any HEX editor tool to modify the DLL file. I have used HxD Hex Editor which is freeware too.
• You have to replace the string and be careful while doing it as you are modifying the system file. Strings are different as per Windows 10 build.
• The current Windows 10 build I am working is 1703 and have modified the following things:

• Once you saved the DLL file and reboot the machine, it will work to have concurrent user sessions.
• However, if your Windows version is different as listed above, then kindly check the listed one

Windows 10 Version 1909

Find: 

39 81 3C 06 00 00 0F 84 5D 61 01 00 

Replace With: 

B8 00 01 00 00 89 81 38 06 00 00 90

Windows 10 Version 1903 (updated v2)

Find:

39 81 3C 06 00 00 0F 84 5D 61 01 00

Replace With:

B8 00 01 00 00 89 81 38 06 00 00 90

Windows 10 Version 1809 (updated)

Find:

39 81 3C 06 00 00 0F 84 7F 2C 01 00

Replace With:

B8 00 01 00 00 89 81 38 06 00 00 90

Windows 10 Version 1803

Find:

8B 99 3C 06 00 00 8B B9 38 06 00 00

Replace with:

B8 00 01 00 00 89 81 38 06 00 00 90

Windows 10 Version 1709

Find:

39 81 3C 06 00 00 0F 84 B1 7D 02 00

Replace with:

B8 00 01 00 00 89 81 38 06 00 00 90

Windows 10 Threshold Wave 2 Update

Find:
39 81 3C 06 00 00 0F 84 3F 42 02 00

Replace with:
B8 00 01 00 00 89 81 38 06 00 00 90

Windows 10 RTM 2015

Find:
39 81 3C 06 00 00 0F 84 73 42 02 00

Replace with:
B8 00 01 00 00 89 81 38 06 00 00 90

Hope this will help you guys too.

Feel free to write the comment if you need any support from my end.

Cheers,

Udhy.