I’m continually changing group policy options in my organization so its useful to actually test these options rather than logging on each time with a test account. Recently I found a way to do this very easily!
Start Menu >> mmc
File >> Add/Removed snap in
Pick the “Resultant set of Policy”and double click to add it.
Click “Resultant set of Policy” on the tree.
On the toolbar click >> Action >> Generate RSoP Data….
I like to use planning mode as this is live on your AD infrastructure.
Choose the AD container your user is in, then the AD container the computer is in
Then click Next for all the other screens.
Voila! You can now see any GP settings applied to any user or computer without needing to log them on!