The default content provider of the file explorer control only works
with files and folders from the current web application. You cannot
access files on another computer or on a different drive.
What you can do in this case is open the IIS configuration and create a
virtual folder in your web application, which points to the files on the
local drive. Make sure that the appropriate ASP.NET windows user has
permissions to at least read the files on the local drive folder. Otherwise
you might see "access is denied" errors when you try to browse with the
file explorer control.
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