Link-Layer Topology Discovery Mapper I/O Driver (lltdio) Service Defaults in Windows 10
Link-Layer Topology Discovery Mapper I/O Driver.
Default Settings
| Startup type: | Automatic |
| Display name: | Link-Layer Topology Discovery Mapper I/O Driver |
| Service name: | lltdio |
| Service type: | kernel |
| Error control: | normal |
| Group: | NDIS |
| Path: | %SystemRoot%\system32\drivers\lltdio.sys |
| Registry key: | HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\lltdio |
Default Behavior
Link-Layer Topology Discovery Mapper I/O Driver is a kernel device driver. In Windows 10 it is starting automatically when the operating system starts. If Link-Layer Topology Discovery Mapper I/O Driver fails to start, the failure details are being recorded into Event Log. Then Windows 10 will start up and notify the user that the lltdio service has failed to start due to the error.
Dependencies
While Link-Layer Topology Discovery Mapper I/O Driver is stopped, disabled or working incorrectly, the following services do not start:
Restore Default Startup Configuration of Link-Layer Topology Discovery Mapper I/O Driver
1. Run the Command Prompt as an administrator.
2. Copy the commands below, paste them into the command window and press ENTER:
sc config lltdio start= auto
sc start lltdio
3. Close the command window and restart the computer.
The lltdio service is using the lltdio.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 10 installation media.