This thread was archived. Please ask a new question if you need help. when i download a plugin i get a 203 erra code /stopping download 1 reply 1 has this problem Last reply by the-edmeister 13 years ago PETERJG 1/17/11, 10:12 AM more options Quote this happens all the time for all plugins this happens all the time for all plugins All Replies (1) the-edmeister Moderator 1/17/11, 11:48 AM more options Quote http://kb.mozillazine.org/Unable_to_install_themes_or_extensions_-_Firefox#Unexpected_installation_error_-203 http://kb.mozillazine.org/Unable_to_install_themes_or_extensions_-_Firefox#Unexpected_installation_error_-203