Star Trek: Enterprise ended in season 4 with a series finale that is still hated by fans 20 years later. The only Star Trek series executive produced by Rick Berman that didn't run for seven seasons, like Star Trek: The Next Generation, Star Trek: Enterprise was canceled by United Paramount Network (UPN) in 2005 for a variety of reasons, including low ratings, franchise fatigue, and a change of leadership at the network. Enterprise ending ultimately meant there would be no new Star Trek TV series produced until Star Trek: Discovery launched in 2017.