manually start diagnostic policy service error 5: access is denied

manually start diagnostic policy service error 5: access is denied (le service de strategie de diagnostic ne fonctionne pas in French)

The best solutions are:

• Go to Start, type "cmd", right click on returned cmd.exe and select "run as administrator"
• Type :
  • net localgroup Administrators /add networkservice
  • enter
  • net localgroup Administrators /add localservice
    enter
• Close the CMD and restart your computer.