privateren wrote:Do I need to have an internet connection to run .\client\UpdateInstaller.exe again.
No, an internet connection is not required for UpdateInstaller. It's where the "Offline" part in WSUS Offline comes from. UpdateGenerator downloads all updates you tell it to (with an internet connection, of course), and UpdateInstaller can be run on as many systems you want regardless of internet connection.
Can I use the same patches in the .msu and run the .\client\UpdateInstaller.exe.
I don't think this would work. Both parts of WSUS Offline (UpdateGenerator and UpdateInstaller) determine the patches required with the help of the catalog provided by MS (wsusscn2.cab). If an update is not found, it's either downloaded (UpdateGenerator) or not installed (UpdateInstaller); the latter also logs missing updates.
I don't see how the integration of manually downloaded updates would work. Sure, creating a static list would be one way, but that doesn't make sure in any way that the system is up to date after installing them. And it might also install unnecessary (superseded) updates. Not to mention update dependencies...
Regards
Dalai