it happens when you use programs that run in "run as administrator" mode — Elevated Programs or Installers
maybe microsoft missed somthing that will fixed later by windows update ? i realy dont know or care cuz i can fix it.
you can fix it your self by forcing windows to make the network drives available to standart and administrator acounts:
1 — run regedit
2. — locate HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Windows/CurrentVersion/Policies/System
3 — create a new DWORD entry with the name EnableLinkedConnections and value 1.
4 — restart your computer
5 — now you can see and use network drives with these installers or applications.