Uhmm, which option did you try?
it works for me every single time. I am with you, not against you. I want to resolve this issue as much as you do, I think.
I am trying to find what is going on. I noticed that the "Diagnostic Policy Service" stops working when this occurs. have you noticed the same?
I have my working after follow the steps above. I have made a list of services after a clean boot. May be You can do the same. and together we can find a solution to the problem.
I hope we can resolve it soon. It is driving me crazy. Lots of time wasted on 8.1 diagnostics.