Why isn't File Explorer showing my mapped drives?

Solution 1:

Because of the UAC, the Shell runs with standard user permissions, it can't see mapped drives which were configured from your application running with admin rights.

There is a workaround called enabling the option EnableLinkedConnections:

• Click Start, type regedit in the Start programs and files box, and then press ENTER.
• Locate and then right-click the registry subkey HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System.
• Point to New, and then click DWORD Value.
• Type EnableLinkedConnections, and then press ENTER.
• Right-click EnableLinkedConnections, and then click Modify.
• In the Value data box, type 1, and then click OK.
• Exit Registry Editor, and then restart the computer.

Or you can apply my hack to run Explorer as admin to also see the mapped drives.