How to Start/Stop Link-Layer Topology Discovery Mapper

Service name: lltdsvc

Display name: Link-Layer Topology Discovery Mapper

Description:

Creates a Network Map, consisting of PC and device topology (connectivity) information, and metadata describing each PC and device.  
If this service is disabled, the Network Map will not function properly.


Path to executable:

C:\WINDOWS\System32\svchost.exe -k LocalService -p

Regedit:
This method shows you how to Start/Stop Link-Layer Topology Discovery Mapper service from Registry Editor

Perform the following steps:

Please go to Start and click on the Type here to search

Type regedit and press Enter

Please confirm User Account Control pop-up

Microsoft official disclaimer

Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require
that you reinstall the operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.

Please navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\lltdsvc and locate Start registry key

Double click on Start and edit the value:

Change Startup type :

Automatic - 2

Manual - 3

Disabled - 4

Automatic (Delayed Start) - 2

Note: When you change to Automatic (Delayed Start) a new key DelayedAutostart is created with value 1

When you change to Automatic from Automatic (Delayed Start), DelayedAutostart change value to 0