Did you elevate this like you read at http://forum.filezilla-project.org/viewtopic.php?f=6&t=18915 ?
I used to make a FTP folder in my windows, so that I can access the FTP folder directly through Windows explorer.
But I don't know why I cannot do it now.
I tried to use "Add network location" wizard, type in my FTP location in "Choose a custom network location".
However, it popped out an error message that it is not a correct folder.
I have checked the settings of the Internet Explorer, and reset all the settings, but it still cannot solve the problem.
Does anyone can help me? Thanks.