Xbox experienced a strange outage earlier this week. Not only were the platform's online services unavailable for almost an entire day, but even games on physical discs stopped working for some players. The company's technology chief, Scott Van Vliet, explained that the outage was caused by problems at an external licensing service. Today, Van Vliet told The Verge that those license check issues should not have extended to discs. "We're looking into reports that some players were unable to access games using discs as expected during the service interruption.