The ProgressManager uses these requests to monitor the uploading of the file, so this is normal behaviour. If the Get requests don't stop after the upload is completed, try the following:
Go to the web.config
Find the appSettings section (it's in the configuration section)
Add the following setting:
<add key="AllowCustomProgress" value="false" />
Kind regards,
Bozhidar
the Telerik team
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