I am making an assumption that you are authenticated to the share. If so there are two solutions.
1. No modifications to the system.
1.a. Open an elevated command
1.b. Authenticate to your resource.
1.c. Run exlorer.exe from the elevated command prompt.
Note: This can have issues if it is the same as your logged in ID to access the remote share.
2. Modify the system so an elevated and non-elevated processes can see all mapped or authenticated shares. This requries adding a registry value.
<pre> REM — Allow elevated and non elevated process to see all the drive mappings.
REG ADD “HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System” /v EnableLinkedConnections /t REG_DWORD /d 1 /F </pre>
Reboot system to take effect.