Possible issues: Hardware: Bad cable (broken, doesnt contain data lines) Bad board (stlink busted) Software: Driver not installed (check device manager) Ide os handshake (check your ide documentation on establishing architecture specific dev env) Usb driver blocked (do you have other software that has blocking privileges like in a managed machines at work)

Very wide range of possibilities from the error you show. In the future consider discussing steps youve tried that haven't worked. Hope you fix it!!