What is the Diagnostic Service Host (WdiServiceHost) service?

An explanation of the Diagnostic Service Host (WdiServiceHost) service in Windows 7.

What does the Diagnostic Service Host (WdiServiceHost) service do?

The Diagnostic Service Host is used by the Diagnostic Policy Service to host diagnostics that need to run in a Local Service context. 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.

Diagnostic Service Host (WdiServiceHost) service details

  • Service name: WdiServiceHost
  • Description: 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
  • Startup type: Manual

Does my computer need the Diagnostic Service Host (WdiServiceHost) service?

Your computer doesn’t need the WdiServiceHost service, but if your computer has a problem you’ll have to troubleshoot and fix it yourself.

Should I disable the Diagnostic Service Host (WdiServiceHost) service?

First off, I have to say that it’s best to leave service optimization up to Microsoft. With that said; I would leave the WdiServiceHost service running. You won’t gain any performance turning it off and it’ll fix a lot of annoying problems for you.

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