Windows 10: Windows could not start the Diagnostic Policy Service

When you attempt to run a Windows Service such as Diagnostic Policy Service, you may receive the following error message – Windows could not start the Diagnostic Policy Service. In this post, we will see what you can do if [...]

This post Windows could not start the Diagnostic Policy Service is from TheWindowsClub.com.

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The Diagnostic Policy Service is not running

Hi,

To resolve this issue, launch the command prompt as Admin and enter
these:

• Type " net localgroup Administrators /add networkservice " then press Enter.
• Type " net localgroup Administrators /add localservice " then press Enter.

Also, we need to make sure that the following services are started.

1. Press Windows key
+ R.

2. On the dialog box, type services.msc

3. Under Services (Local)
list, find the services: Diagnostic policy, Diagnostic Service, Diagnostic system host.

4. Check the status of the services is started or not.

5. If the services are not started, you can
Right Click a status and Start a service.

6. Restart your computer.

Please post back with the result for further assistance.

 

Windows 10 Diagnostics Policy Service fails

OK, take 2 on trying to submit this reply (the system was constipated the first time ... lucky I copied the text before it disappeared)

Actually, I believe the message is "the Diagnostic Policy SERVICE is not running".

No problem, simple fix.

I the Start menu type services

right click on it, select "Run as Administrator"

scroll through the list, find "Diagnostic Policy Service"

right click on it, select Properties

Change the "Startup type" drop down to Automatic

click on the "Start" button under "service status"

click on APPLY to save the changes

OK to close the dialog.

That should fix that problem.

 

Diagnostic Policy Service - high CPU


HP laptop problem
In the last few days, this laptop started having poor performance, with Task manager showing Diagnostic Policy Service taking up to 30% or more of CPU.

HP Spectre x360 - 13-4197dx (ENERGY STAR)




In the last few days it started having poor performance, with Task manager showing Diagnostic Policy Service taking up to 30% or more of CPU.





Did upgrade of BIOS, no improvement.
Downloaded all current windows upgrades – no fix.
I created a new (admin) user, same problem.
I ran all of the diagnostics in the HP Support Assistant, all passed – no effect.
I ran "sfc /scannow." and "Dism /Online /Cleanup-Image /RestoreHealth" – no effect.

There is an online thread on this in the HP forums, which does not seem to show any fix.
https://h30434.www3.hp.com/t5/Notebo...c/td-p/6209980

The HP support is abysmal – it took several minutes for him to echo back “so this is your computer system?”, and then the only suggestion was a factory reset.