Link-Layer Topology Discovery Mapper I/O Driver - Windows Vista Service
Link-Layer Topology Mapper I/O Driver by Microsoft Corporation.
This service also exists in Windows 10, 11, 7 and 8.
Startup Type
| Windows Vista edition | without SP | SP1 | SP2 |
|---|---|---|---|
| Starter | Automatic | Automatic | Automatic |
| Home Basic | Automatic | Automatic | Automatic |
| Home Premium | Automatic | Automatic | Automatic |
| Business | Automatic | Automatic | Automatic |
| Ultimate | Automatic | Automatic | Automatic |
Default Properties
| Display name: | Link-Layer Topology Discovery Mapper I/O Driver |
| Service name: | lltdio |
| Type: | kernel |
| Path: | %WinDir%\system32\DRIVERS\lltdio.sys |
| Error control: | normal |
| Group: | NDIS |
Default Behavior
The Link-Layer Topology Discovery Mapper I/O Driver service is a kernel mode driver. If Link-Layer Topology Discovery Mapper I/O 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 lltdio service has failed to start. If you disable this service, then 2 other services will be unable to start (see the "Dependencies" section below).
Dependencies
If the Link-Layer Topology Discovery Mapper I/O Driver is stopped, the following services will not start and initialize:
Restore Default Startup Type of Link-Layer Topology Discovery Mapper I/O Driver
Automated Restore
1. Select your Windows Vista edition and Service Pack, and then click on the Download button below.
2. Save the RestoreLinkLayerTopologyDiscoveryMapperIODriverWindowsVista.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 lltdio.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.