Terminal Device Driver (TermDD) Service Defaults in Windows XP

Terminal Server Driver by Microsoft Corporation.

Default Settings

Startup type:System
Display name:Terminal Device Driver
Service name:TermDD
Service type:kernel
Error control:normal
Path:%SystemRoot%\system32\DRIVERS\termdd.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\TermDD

Default Behavior

Terminal Device Driver is a kernel device driver. In Windows XP it is starting right at Kernel initialization. If the Terminal Device Driver 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 TermDD service has failed to start.

Restore Default Startup Configuration of Terminal Device Driver

1. Run the Command Prompt.

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

sc config TermDD start= system
sc start TermDD

3. Close the command window and restart the computer.

The TermDD service is using the termdd.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.