Mapping network driver and instalation

I need install an application on the network. I mapped a network place as a
drive (Map Network Drive).
When the install is started - a installator need administaration privilage.
But I can't see a network drive (mapped as drive - letter). (This is
installator dialog which show installation path, not msi).

Than I run notepad as administator. When I try to open any file all mapped
drives are seen as disconnected (red cross). When I click on that drive -
this drive became connected (green).

And now I can see this drive in my installation application!!!

What I have to do to avoid this way?
How to have mapped drive as connected (green) in administative privilage
installators?

Best regards
Bernard