FIX: The Diagnostics Policy Service is not running
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
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
3. Reboot your device and see if the troubleshooter is now able to fix problems on your system.