NDIS Usermode I/O Protocol (Ndisuio) Service Defaults in Windows 8

NDIS User mode I/O driver by Microsoft Corporation.

Default Settings

Startup type:Manual
Display name:NDIS Usermode I/O Protocol
Service name:Ndisuio
Service type:kernel
Error control:normal
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Ndisuio

Default Behavior

The NDIS Usermode I/O Protocol service is a kernel device driver. In Windows 8 it will not be started until the user starts it. If NDIS Usermode I/O Protocol fails to start, the error details are added to Windows 8 error log. When the operating system startup is complete, the user is being notified that the Ndisuio service hasn't been started.


All the services listed below will not start if NDIS Usermode I/O Protocol is disabled:

Restore Default Startup Configuration for NDIS Usermode I/O Protocol

1. Select your Windows 8 edition and update pack, and then click Download.

2. Save the Win8_Ndisuio_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

4. Restart the computer.

The Ndisuio service is using the ndisuio.sys file that is located in the %WinDir%\system32\DRIVERS folder. If the file is corrupted or deleted, you can put it back in there.