FIX: The Diagnostics Policy Service is not running

There is no need to add these services to any other localgroups since Administrators are the only group that can use the troubleshooting service.

To troubleshoot problems with the Diagnostics Policy Service you’ll need to execute the following steps:

1. Open Start, Type CMD, Right-Click Command Prompt and choose Run as Administrator

Run as Administrator FIX: The Diagnostics Policy Service is not running  Diagnostics Policy Service

Run as Administrator

2. Once Command Prompt has opened enter the following two commands, after each command hit enter.

net localgroup Administrators /add networkservice
net localgroup Administrators /add localservice

Add Services FIX: The Diagnostics Policy Service is not running  Diagnostics Policy Service
Add Services

3. Reboot your device and see if the troubleshooter is now able to fix problems on your system.



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About The Author
Yuri Pustjens
Yuri Pustjens
2014, 2015, 2016, 2017 and 2018 Microsoft Most Valuable Professional Windows Yuri specializes in troubleshooting (crash analysis and devices), system resource utilisation and system performance. He is also very interested in Customer Security. Yuri can be found as Windows Community Moderator and Wiki Author on Microsoft Answers and is active on different communities all across the web.
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  • Avatar
    May 31, 2019 at 3:47 am

    I worked at least 8 hours attempting different solutions until I came across this ANSWER. Twenty minutes and it is solved. Hard to believe. Thank you.

  • Avatar
    April 2, 2017 at 3:54 pm

    You saved my work I manged to fix my client’s machine. Many thanks

  • Avatar
    September 11, 2015 at 3:13 pm

    Did three times, and all I got was “access is denied” replies…Am signed in as my laptop’s ONLY administrator…

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    Saad Alhamied
    July 21, 2015 at 2:58 am

    Thank you so much man , you saved my life , I had a project that I had to send and after installing new fans and fan controller I had no Internet … You are a life savor ,
    Thank you again

  • Avatar
    July 9, 2015 at 9:22 am

    Yuri, you’re the man! I spend an hour talking to tier 1 & 2 tech support and they couldn’t figure out how to fix the issue. Then I just followed your instructions and less than 5 minutes later everything was working again. Thanks!!

  • Avatar
    Zack Grizzell
    June 12, 2015 at 12:24 am

    Yuri you’re a rockstar! Thank you.

  • Avatar
    June 11, 2015 at 1:54 pm

    Your the best
    Go on

  • Avatar
    CAsper Joe
    April 27, 2015 at 12:38 pm

    I have fix it but is not seeing the follow computer on my network what do i do

  • Avatar
    March 25, 2015 at 7:47 am

    Your a legend
    Thank you soooo much

  • Avatar
    January 27, 2015 at 3:08 pm

    Thank you, you saved me money!

  • Avatar
    January 16, 2015 at 5:57 pm

    Thank u very worked

  • Avatar
    December 2, 2014 at 3:45 am

    I am having same prob. as two above. Further advice is great

  • Avatar
    November 28, 2014 at 3:37 pm

    I am having the same problem as above. Had this problem a few months ago also and this fixed worked but it isn’t this time. Getting the same system 1378 error. Any help on this would be appreciated

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    November 10, 2014 at 11:56 am

    Hi thanks for this however while i was trying to follow your steps when i type in the required text in my cmd i get the following errors

    System error 1378 has occured.

    The specific account name is already a member of the group.

    Is there a fix for this?

    • Yuri Pustjens
      November 12, 2014 at 2:11 pm

      Hello Moe.

      First of all sorry for the delay in my reply. If you ignore the error and just continue with the next command, then reboot your device doesn’t that work to solve your problem?

      Please get back to me

    • Avatar
      November 15, 2014 at 12:33 pm

      Hello Yuri

      Thank you so much for getting back to me. I tried troubleshooting but it still says the diagnostics policy service is not running

  • Avatar
    November 8, 2014 at 2:47 am

    Thank you! This worked first time, so simple to do but not to know. Thank you

  • Avatar
    November 6, 2014 at 6:01 am

    Thanks.Your resolving worked the best!

  • Avatar
    August 26, 2014 at 10:44 am

    Thanks……I’ve been awake since 4am trying to gain internet access. I tried several sites and found your advise worked the best! Awesome….now I can go to sleep and hopefully get to work on time. Thanks again. Ayjent007

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