Windows 8 Services

NetIO Legacy TDI Support Driver - Windows 8 Service

NetIO Legacy TDI Support Driver.

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

Startup Type

Windows 8 edition Windows 8 Windows 8.1 Windows 8.1 Update 1
Core System System System
Pro System System System
Enterprise 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 logged. Windows 8 startup proceeds, but a message box is displayed informing you that the tdx service has failed to start.


NetIO Legacy TDI Support Driver won't start, if the TCP/IP Protocol Driver service is stopped or disabled.

The following services are unable to start if NetIO Legacy TDI Support Driver is stopped:

Restore Default Startup Type of NetIO Legacy TDI Support Driver

Automated Restore

1. Select your Windows 8 release and edition, and then click on the Download button below.

2. Save the RestoreNetIOLegacyTDISupportDriverWindows8.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.

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 8 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.