The new Active Diagnostics is a great tool to quickly identify some problems and it has also helped me understand and resolve issues when the regular SolarWinds Diagnostics routine fails to complete.
However, some of the returned messages are rather confusing and I wonder if a dictionary of its messages with meanings and recommendations has been created and could be published.
Regards, Robert
thanks neomatrix1217 but on NPM 11.0.1 dont exist that folder 
RDP to the NPM v11 Primary Polling Engine,
Do a Start > SolarWinds Orion > Documentation and Support > Orion Diagnostics
At the bottom of the on the SolarWinds Diagnostics page select SolarWinds Active Diagnostics
and then select whether you want all tests to run or just a single test - best to run all of them 
Thanks robertcbrowning but I already try to execute active Diagnostics on my Addittional Web Server (SW AWS), but when I push Run Diagnostics Button notice me with a message that "the prograr was not found on registry" or something like that. This message appears only on SW AWS.
I suspect that the error message is telling the truth 
and that the registry has a problem. You could raise a ticket on the Customer Portal for help, but I suspect they may ask you to re-build your AWS.
You could try doing a Configuration Wizard on this AWS. which will run through all the files, reg entries and permissions required or
You may want to just stand up a new Windows server, download the correct pieces of AWS software from your Customer Portal, but not license any of it. You'll get 30-days to do the licencing. You could then run the two AWS servers side by side for a while and prove that the Active Diagnostics function works properly. When you are happy, you can use the Licence Manager on the original AWS to unload the licences & then use the Licence Manager on the new AWS to re-instate the licences. Finally, you can decommission the original AWS.
