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Whenever I try to upload a file to a website I get an error message.

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Every time I try to attach a document in a gmail message, upload a video to youtube, or post pictures to facebook I receive an error message saying that the upload failed due to a firewall or proxy but will upload in the basic uploader version of each. I don't use any proxies and can't find firewalls to turn them off to see if that would help.

Every time I try to attach a document in a gmail message, upload a video to youtube, or post pictures to facebook I receive an error message saying that the upload failed due to a firewall or proxy but will upload in the basic uploader version of each. I don't use any proxies and can't find firewalls to turn them off to see if that would help.

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Tools > Options >> Advanced, then the Network tab, Connections - Settings button

See if Use System Proxy Settings is selected? Try using No Proxy, instead.

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I already tried that unfortunately and had no luck.

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I, too, cannot upload files. I cannot attach files to gmail, either. IE works fine. I checked no proxy also.