The driver implements the RNDIS protocol, which encapsulates Ethernet frames over USB. From Windows 10’s perspective, the tethered phone appears as a standard network interface card (NIC). Once activated, IP traffic flows through the USB cable, allowing the PC to use the phone’s data plan.
Before attempting the installation, ensure you have the following:
Windows 10 does NOT natively support tetherxp.inf. The driver model changed significantly after Windows 7. If you try to force-install this driver on Windows 10 (e.g., by pointing Device Manager to it), you will likely see:
Why?
tetherxp.inf contains hardware IDs and setup instructions designed for the Windows XP kernel architecture (NT 5.x). Windows 10 (NT 10.0) rejects drivers that aren't digitally signed for its platform or that use deprecated methods. microsoft driver tetherxp.inf windows 10
tetherxp.inf became a cult symbol of Microsoft's backward compatibility burden. Its story teaches:
If you encounter a reference to tetherxp.inf on Windows 10 today, it's either:
Final verdict: Dead but not buried on Windows 10—buried completely on Windows 11. Use Wi-Fi hotspot or rndismp6.inf. RNDIS tethering not working on phone side: Ensure
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: The driver implements the RNDIS protocol , which
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.
For modern USB tethering (Android, iPhone), Windows 10 uses the rndismp6.sys and usb8023.sys drivers, managed by the netrndis.inf file – not tetherxp.inf. Microsoft strongly discourages reliance on the legacy XP-era version.
Cause: DHCP over RNDIS fails.
Fix: Set static IP manually – typically 192.168.42.x for Android RNDIS or 192.168.0.x for older phones. Check your phone’s USB tethering subnet.