Thanks alot, worked perfect, and i learned one new thing! :) Have a good day!

jwradhe wrote: I can search , but only get some results from ad.company, not the other subtree directorys. This statement doesn't make sense to me, because all of the subtrees you've listed contain "ad.company" as part of their names. The difficult we do right away... ...the impossible takes slightly longer.

Works for me: private DateTime GetLastUpdateSuccessDate() { Type t = Type.GetTypeFromProgID("Microsoft.Update.AutoUpdate"); dynamic a = Activator.CreateInstance(t); DateTime lastUpdate = a.Results.LastInstallationSuccessDate; return lastUpdate; } Asking questions is a skill CodeProject Forum Guidelines Google: C# How to debug code Seriously, go read these articles. Dave Kreskowiak