Open Task Manager > Services > Locate TextInputHost.exe > Right click select Start
The .exe names are not included in "task manager > services" in either Windows 10 or 11.
TextInputHost.exe is not running as a service on either my Win 11 laptop, or my Win10 VM.
C:\>tasklist /svc | findstr -i textinputhost
TextInputHost.exe 13908 N/A
I agree with Reza-Ameri's question, Why do you want to perform this action? What is the real problem that you are trying to solve? Did the process crash? Why can't you just log off and log back on?
Have you tried to open a command prompt and just run the program?