Some very old phones (pre‑2010) truly only support tetherxp.inf . For those rare cases on Windows 10:
:
Microsoft kept tetherxp.inf in Windows 7 and 8 for . Many older phones still used RNDIS over USB. The driver worked mostly unchanged—except that Windows would show a compatibility warning "designed for Windows XP" but still load it. microsoft driver tetherxp.inf windows 10