Microsoft Driver Tetherxp.inf Windows 10 -

Some very old phones (pre‑2010) truly only support tetherxp.inf. For those rare cases on Windows 10:

Option A – Use a different tethering mode
Check your phone for "Modem mode" or "CDC Ethernet" – those may use a different, newer driver.

Option B – Create a custom compatibility INF (Advanced, not recommended)
You can edit the INF to change NTx86 to NTamd64 or NTx86.10.0, but this often breaks digital signature requirements. To attempt this: microsoft driver tetherxp.inf windows 10

Option C – Use a virtual machine
Install Windows XP in VirtualBox or VMware on your Windows 10 PC. Pass the USB phone through to the VM, then install tetherxp.inf inside XP. Share the VM’s network connection to the host.

TetherXP.inf is a setup information file used by older versions of Windows (specifically Windows XP) to enable USB Tethering. It instructs the Windows operating system on how to communicate with a specific mobile device to use its cellular data connection as a network adapter. Some very old phones (pre‑2010) truly only support

Many point-of-sale terminals, rugged handhelds (e.g., Symbol/Motorola MC series), and medical devices use RNDIS over USB. Their firmware hasn’t been updated since 2009.

Despite its obsolescence, legitimate use cases persist: Option C – Use a virtual machine Install

Cause: Required system files (rndismp.sys, usb8023.sys) are missing or mismatched.
Fix: Copy these files from C:\Windows\System32\drivers of a Windows XP VM into your Windows 10 SysWOW64\drivers (if 32-bit compatibility mode) or the main driver store.