hi i'm not to sure if i answered you correctly, usually your downloaded files will go straight to your c: username (your username log-in) > downloads.
My question is how come you have autodesk folder in c: drive if you haven't install the autodesk software (hoping there is no other autodesk product installed)
Or your problem is cannot see the file extension? If that is the case you have to go to control panel > folder options > view and tick the "show hidden files, folders and drives. hope it helps. thanks
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