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

NDIS Usermode I/O Protocol.

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

NDIS Usermode I/O Protocol is a kernel device driver. In Windows XP it won't start until the current user starts it. If the NDIS Usermode I/O Protocol fails to start, the technical information about the error is added to the Event Log. Windows XP startup should proceed, but a message box should be displayed informing the user that the Ndisuio service has failed to start.


The following components depend on NDIS Usermode I/O Protocol:

Restore Default Startup Configuration of NDIS Usermode I/O Protocol

1. Run the Command Prompt.

2. Copy the command below, paste it into the command window and press ENTER:

sc config Ndisuio start= demand

3. Close the command window and restart the computer.

The Ndisuio service is using the ndisuio.sys file that is located in the C:\Windows\system32\DRIVERS directory. If the file is removed or corrupted, read this article to restore its original version from Windows XP installation media.