How to Start/Stop Diagnostic Service Host service

Service name: WdiServiceHost

Display name: Diagnostic Service Host

Description:

The Diagnostic Service Host is used by the Diagnostic Policy Service to host diagnostics that need to run in a Local Service context.  
If this service is stopped, any diagnostics that depend on it will no longer function.

Path to executable:

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

Locate Diagnostic Service Host service observe his current status and open to make changes

From General tab you can Start/Stop and change the Startup type of Diagnostic Service Host service

To finish press ok button and close Services window

Services.msc:
This method shows you how to Start/Stop Diagnostic Service Host service from Services.msc

Perform the following steps:

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

Type services.msc and press Enter