Microsoft Driver Tetherxp.inf Windows 10 [work] Access

However, the real driver file remained on disk for optional manual install.

It sounds like you're referring to the tetherxp.inf driver file — which was originally designed for Windows XP to enable USB tethering (often for older mobile phones or PDAs) — and noting that it still gets mentioned or even used on Windows 10. microsoft driver tetherxp.inf windows 10