Windows-kb890830-v5.30-delta. exe

NIS v21

Vista Home Basic laptop

I downloaded and installed the November 2015 Microsoft updates the other day ( a little late, I know)

 

I noticed this item in my download history portion of NIS

Windows-kb890830-v5.30-delta. exe

 

OK when I check it out it shows as having to do with the MRT item that comes out every month as part of the Microsoft updates. However I do not see any such download going back until May or March (cant remember) 2015

Should this show in the downloads every month since I install updates every month? Does this gap of time mean that the tool was not run? Where can I find the version history of this tool?