Why cant I turn on usb debugging?

[AC Question]

why cant i turn on usb debugging

samsung galaxy s5 version 5.0 usb debugging is greyed out and wont allow me to select it when i turn on developer options

 

[B. Diddy]

Re: why cant i turn on usb debugging

Welcome to Android Central! Is it connected to a computer via USB? It might not give you the option if you're not actively connected.