When I upload files with UFT-8 file name through IIS on my Windows Server file names are ruined. (They are changed as if they are encoded in ASCII and therefore they are no more accessible). I Wonder if there is any work around for this problem. I should also mention that my Windows Server doesn't have any issue with UTF-8 file names and I can create them through RDP or FTP. The problem only occurs when uploading through IIS.
OS: Windows Server 2008 SP1
Web Server: IIS 7.5
Uploading by PHP script executed through fastcgi