Cannot restore the Diagnostic Policy Service

This is my first post in TenForums, I'll try not to screw up. And I am not a computer tech.

Windows 10 Pro Version 10.0.14393 Build 14393
Dell Optiplex 380

I am trying to network my computers, of which I have too many! LOL These are the OSes I need to network, although each OS is not always on a separate computer.

• XP Pro
• Vista Ultimate
• Windows 7 Ultimate
• Windows 8 Pro
• Windows 7 Starter
• Windows 10 Pro
• OS X 10 El Capitan
• Linux Mint 18.0 Sarah

XP and Vista is a machine set up as a multiboot computer.
7 & 8 I select the boot drive during boot up.
All others are individual machines.

Goals:

1. To get everything to talk to each other seamlessly, starting with W10 and W7.
2. And actually enjoy using my computers again. I grew tired of sneakernet years ago.

All 3 computers are in the same workgroup, and appear in File Explorer. When I attempt to access either W7 computer, W10 cannot access the computer, and when I run the Diagnosis is says the Diagnosis Policy Service is not running. Checking Services in Task Manager, it's not listed.

Downloaded the service from here, Restore Default Services in Windows 10 Windows 10 Performance Maintenance Tutorials and it also fails, saying keys are open or I don't have the necessary permissions.

I'm using an administrator account.

How do I solve this last issue?

TairikuOkami said:

Try to run this code in CMD run as admin and then restart:

Code:

reg add "HKLM\SYSTEM\CurrentControlSet\Control\WMI\Autologger\EventLog-Application" /v "Start" /t REG_DWORD /d "1" /f
reg add "HKLM\SYSTEM\CurrentControlSet\Control\WMI\Autologger\EventLog-System" /v "Start" /t REG_DWORD /d "1" /f
reg add "HKLM\System\CurrentControlSet\Control\WMI\Autologger\DiagLog" /v "Start" /t REG_DWORD /d "1" /f
reg add "HKLM\System\CurrentControlSet\Control\WMI\Autologger\WdiContextLog" /v "Start" /t REG_DWORD /d "1" /f
sc config EventLog start= auto
sc config EventSystem start= auto
sc config WdiServiceHost start= demand
sc config SENS start= auto
sc config SystemEventsBroker start= auto
sc config Winmgmt start= auto
sc config Appinfo start= auto
sc config CryptSvc start= auto
sc config DPS start= auto

Thank you, that worked. :)