Connection refused: connect

Try connect to Samsung Galaxy S8+ from Android Studio. After downloading SAMSUNG_USB_Driver_for_Mobile_Phones.exe from and installed, and connect S8+ with USB cable, I get error:

4:52 PM Adb connection Error:An existing connection was forcibly closed by the remote host

4:52 PM Unable to open connection to: localhost/, due to: Connection refused: connect

4:52 PM Connection attempts: 1

How do I solve the problem?

I can connect to another mobile phone: when it’s connected to computer, on the Asus mobile phone, a pop up asks “Allow connection?”. But S8+ doesn’t have any action when I connect it to computer with USB cable. I can access s8+ storage after USB cable connection, and also enable developer option.

It seems two Android phones are so different. Almost all features are different.