Hi,
It's really a shot in the dark, but you may try the following:
- Add your application to the trusted sites list
- Use standards mode (set DOCTYPE and IE meta tag)
- Try an upload from a form with a regular file input
- Try configuring request tracing (IIS 7)
- (On a test server) install Wireshark to get a "raw" network trace
I hope this helps.
Greetings,
Tsvetomir Tsonev
the Telerik team
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