FTP on IIS6 failed with Arabic characters in file names.

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I came across this scenario, customer was failing to upload or download any files (have Arabic letters) on FTP Site on IIS6 

Cause:  By design

Notes:

UTF-8 support is a more recent addition to FTP that was not added for FTP6.
UTF-8 support was added in FTP7 for Windows Server 2008 and Windows Server 2008 R2 (FTP7 .5).

Ref https://www.iis.net/download/FTP