If you do a search here for "DiagTrack" or "Diag Track" you should find that it is not good. IMHO I never came across the thread to know about it although it has been around for a while. It has recently appeared in my Services, so I looked into it. I have since then disabled ALL (4 of them for me) "Diagnostic Services" off. But they are tricky ... in Services Properties in the "Recovery" tab they have it arranged so that it will reset after 1 day if you just set it to Stop/Manual. So I have Stopped and Disabled it, then set all "Failure modes" to "Take No Action' and "reset fail count after:" to 0 days. No other services are dependent, but it needs Remote Procedure Call to work. I left Remote Procedure Call alone because it is also used for legitimate services (I think). At this point MS is the LAST thing I want to listen to for diagnostic advice. Literally, the last.
Edited by hamluis, 28 August 2015 - 09:31 AM.
Moved from Win 7 to Tips/Tricks - Hamluis.