If you recently tried to upload your video to YouTube through Windows Live Movie Maker only to see it fail? It was a change made on YouTube.com that caused this authentication failure with the YouTube service for a set of users. “This change wasn’t specific to Movie Maker some other applications and websites that connect to YouTube were also affected. Users reported us via Windows Live Answers site, we alerted the YouTube team who promptly rolled out an update to the service, restoring the ability to publish from Movie Maker. At this time, Movie Maker users shouldn’t have difficulty publishing directly to YouTube,” explained Live team.