外媒VGC報道，微軟Xbox CTO史考特·范弗利特表示，上月大規模服務中斷的故障已修復且原因查明。7月27日Xbox多項服務中斷13小時，導致玩家無法登錄、查看遊戲庫或啟動應用。
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!
Earlier today, many players began experiencing issues with sign in, enumerating their game libraries and playing games. The team has worked hard throughout the day to fix the issue, and we've restored service as of 2:30 PM PDT. Nonetheless, this is an unacceptable situation, and we must do better to support you. Over the coming weeks, you'll hear more from me about our services, our platform, and the work we're doing to make XBOX better. And that starts with some transparency about this incident. What happened. Late last night, a licensing service that sits outside of XBOX, but which XBOX depends upon, began failing. This caused some sign-in scenarios to fail, and it caused many scenarios that require an entitlement check to also fail, such as listing out your Full Library and launching games that you own. It also affected several of our publishing and store partners who depend on those same systems which is why some of you saw issues in specific games and not others. What we did. Our on-call teams caught the first signals overnight through automated monitoring and declared a major incident. Once we isolated the failing infrastructure, we shifted traffic onto the healthy parts of the system while the team continued to work towards a root cause. Service came back unevenly across regions which is why some of you recovered hours before others. What's next. We're running a full post-incident review. I care less about the one-line root cause and more about the real questions: why a failure in one service was able to take down this much, why recovery took as long as it did, and what we change so a single point of failure can't ruin your night again. That means hardening the dependencies underneath sign in and game launch, improving how we detect and contain this class of failure, and being faster and clearer with you when something breaks. Thank you for your patience, and for the reports that genuinely helped us narrow this down. We'll do better.
范弗利特解釋，故障根源是一項底層許可服務中斷疊加系統更新導致部分服務失響應。同時客戶端軟體棧漏洞使許可證驗證失敗，引發級聯故障，造成遊戲無法啟動及遊戲庫異常。
目前Xbox已著手處理，本周將推送固件更新。底層許可服務將移交Xbox團隊，工程師正加固基礎設施以提升更新穩定性。客戶端漏洞修復版8月10日起推送，8月17日轉為強制更新。後續工程與運營團隊將全面審視技術棧，提升可靠性以防類似中斷重演。
