Copy from [[ https://commons.wikimedia.org/wiki/Commons:Upload_Wizard_feedback#Suggestion:_Notify_user_of_blocked_IP_before_the_upload_process_starts.2C_not_when_it_completes | Upload Wizard feedback ]] ([[https://commons.wikimedia.org/w/index.php?title=Commons%3AUpload_Wizard_feedback&type=revision&diff=165871239&oldid=165603661 | diff]]):
> I uploaded a video file using the Upload Wizard, chose a license, came up with a descriptive file name, wrote a description in two languages, dated the file, and added proper categories, only for the upload to be rejected and all the this work go to waste because users behind a proxy service apparently can't upload files. I had to disconnect from the VPN and completely reupload the file (which was a PITA since it was a video file) and rewrite and re-apply all the metadata since none of that was saved either.
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> If it wasn't a cat video I wouldn't have bothered reuploading and rewriting everything.
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> Just a suggestion: you might want to let the user know they can't save their upload if they're behind a proxy service before they've spent 15 minutes uploading and looking for categories. The current approach results in waste of bandwidth and a waste of time. -- Veikk0.ma