Windows Vista Services

NetIO Legacy TDI Support Driver - Windows Vista Service

NetIO Legacy TDI Support Driver.

This service also exists in Windows 10, 7 and 8.

Startup Type

Windows Vista edition without SP SP1 SP2
Starter System System System
Home Basic System System System
Home Premium System System System
Business System System System
Ultimate System System System

Default Properties

Display name:NetIO Legacy TDI Support Driver
Service name:tdx
Error control:normal

Default Behavior

The NetIO Legacy TDI Support Driver service is a kernel mode driver. If NetIO Legacy TDI Support Driver fails to start, the error is recorded into the Event Log. Windows Vista startup proceeds, but a message box is displayed informing you that the tdx service has failed to start. If you disable this service, then 4 other services will be unable to start (see the "Dependencies" section below).


NetIO Legacy TDI Support Driver will not start, if the TCP/IP Protocol Driver service is stopped or disabled.

If the NetIO Legacy TDI Support Driver is stopped, the following services will not start and initialize:

Restore Default Startup Type of NetIO Legacy TDI Support Driver

Automated Restore

1. Select your Windows Vista edition and Service Pack, and then click on the Download button below.

2. Save the RestoreNetIOLegacyTDISupportDriverWindowsVista.bat file to any folder on your hard drive.

3. Right-click the downloaded batch file and select Run as administrator.

4. Restart the computer to save changes.

Note. Make sure that the tdx.sys file exists in the %WinDir%\system32\DRIVERS folder. If this file is missing you can try to restore it from your Windows Vista installation media.

Yea, though I walk through the valley of the shadow of death, I will fear no evil: for thou art with me; thy rod and thy staff they comfort me.