Hi,
We tried uploading files with arabic file names and it seems to be working fine. One thing you want to check is the encoding settings in your web.config. It should be set to utf-8:
Code: HTML/ASPX
<globalization
requestEncoding="utf-8"
responseEncoding="utf-8"
/>
If the problem persists, we would need you to create a test project that demonstrates the problem. We will look into it and see what we can find as soon as we have that.
Thanks