
Xbox Chief Technology Officer Scott Van Vliet labeled a 15-hour service outage that prevented users from accessing digital libraries and launching games as an 'unacceptable situation.'
The disruption, which ended at 2:30 PM PDT on July 28, was caused by a failure in a Microsoft authentication service that handles game permissions and entitlement checks.
Microsoft has initiated a full post-incident review to harden dependencies and improve system recovery times, following similar network issues faced by PlayStation earlier this month.