The episode I am looking for is no longer available. Why? Our video content is constantly being updated, and sometimes we have to remove a video due to contractual restrictions. Related articles What is HISTORY Vault? Why am I being asked to sign in with a TV provider to watch certain video content? Can I watch videos if my TV provider isn’t currently supported? HISTORY videos won't play. What should I do? When I try to watch HISTORY Vault, the video player is either blank or videos won’t play.