Stop a program from starting in terminal server

you have to undo the following:
How to configure TeamViewer as a Windows system service
If you did not set up automatic start with Windows (system service) during the installation process,
you can always do it later by following these steps:
To configure TeamViewer as Windows system service, follow these steps:
1. Start TeamViewer.
2. In the main menu,click Extras | Options.
3. Select the General category.
4. Select the Start TeamViewer with Windows option.      here you want to unselect this option
A window will open prompting you for a password.
5. Enter a secure password in the Password field and confirm.
6. Click the  OK button.
7. Click  OK in the  Permanent Access Activated dialog box.
8. The computer is now configured to start automatically with Windows

https://www.teamviewer.com/en/res/pdf/TeamViewer7_Manual_RemoteControl_EN.pdf

I'm not sure that you can stop TeamViewer from starting on a per-user basis. TeamViewer writes its auto-start information to HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\TeamViewer\DefaultSettings\Autostart_GUI AFAIK, so disabling this will also disable it entirely, which I am assuming you don't want.

Is there any reason you need to use TeamViewer rather than RDP for remote control? On a Citrix server I'd be keen to minimize the system footprint and removing unnecessary software would be a good way to contribute to this.

We install TV Host only so it always run when windows start, if there's a script that will kill the process after the user is logon?

You can use the taskkill.exe to kill a process by running

taskkill /IM teamviewer.exe /F

in the user process. This will only kill the process if it is running in the user session however. If it is a System process you need to kill you may need to do some form of privilege escalation.

Those solutions did not work for me.