How can I setup multiple touch screens in Windows 10?
Note: below description is created on a Windows 10 version 1803 machine. When using a different Windows version, the procedure and/or screen shots might be different.
Make sure an external keyboard is connected to the PC. Also make sure that windows is set to extended desktop for the second monitor (press WindowsKey+P to check or correct).
This should cover all multi monitor situations. Each added monitor should just result in another screen needing to be touched or skipped with [Enter].
1. Click the Start Menu and start typing [Control Panel].
2. When visible Click [Control Panel].
3. Within the Control Panel, select [Hardware and Sound]
4. Within Hardware and Sound, select [Tablet PC Settings]
3. Click [Setup]
4. Touch the touchscreen that is asked to touch ("Touch this screen to identify it as touchscreen"). If it is not a touchscreen, press [Enter].
5. Press [Enter] when it asks you to.
6. Touch the touchscreen that is asked to touch ("Touch this screen to identify it as touchscreen"). If it is not a touchscreen, press [Enter].
7. The application should close when all attached monitors are accounted for. You can now test if touch works on both screens (you cannot use the touch of both screens simultaneously).
8. Restart the computer and verify if the touch still works on both screens (you cannot use the touch of both screens simultaneously).