XBOX CTO reveals that an underlying service for Home Console sharing and Game Pass purchased content, along with a bug, led to the service outage last month.
For those who are in the dark, XBOX saw a major outage last month, with online services, game downloads, and sign-ins impacted. It also saw discs failing, which led to significant backlash. The CTO had already addressed the situation and has now revealed what exactly happened, what they did to solve it, and what comes next.
XBOX CTO Explains Root Cause of Outage and Next Steps
In a detailed post on X (formerly Twitter), XBOX CTO Scott Van Vliet discussed the recent service outage. The problem originated from an underlying service related to XBOX Home Console sharing, Game Pass purchased content, and PC scenarios, which experienced an outage that caused some system services to become unresponsive.
This situation was compounded by a bug in the XBOX client software, leading to failed license checks and resulting in “cascading” failures. As a result, some players experienced difficulties launching games and encountered additional issues with library enumeration.
The company is transitioning ownership of the underlying licensing service to the XBOX team. Simultaneously, their engineers will focus on strengthening the services and infrastructure in preparation for future updates. The bug that was causing issues has been fixed in an update that began rolling out on August 10 and will become mandatory on August 17.
Furthermore, the engineering and operations team is conducting a comprehensive review of the entire stack to enhance the reliability of their products and services. The CTO ended by stating that more updates with new features and quality-of-life updates should arrive in the coming weeks and months.
Here’s the full statement from Scott Van Vliet:
I wanted to provide an update on the incident affecting some players trying to launch games and access other game library features last week.
What was the root cause?
As I previously wrote, an underlying service required for XBOX Home Console sharing and Game Pass purchased content, as well as some PC scenarios, experienced an outage whereby an update to the system put some services in an unresponsive state. This was compounded by a bug in the XBOX client software stack, which caused other license checks to also fail when that first service went down. These two issues created some cascading failure scenarios that affected some players’ ability to launch games and causing cascading issues with library enumeration.
What have we done about it?
We are transitioning ownership of the underlying licensing service to the XBOX team while our engineers are actively hardening the services and infrastructure for future updates. The client bug has been fixed in an upcoming release, which starts rolling out today, August 10, and becomes mandatory August 17.
What comes next?
Our engineering and operations teams are looking broadly across our stack to improve reliability of our products and services. We will have more updates to share in the weeks and months ahead as we roll out some great new features for players, paired with quality-of-life systems updates. Thanks for playing!
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