跟进：微软Microsoft 365故障进入第二天，容量尚未恢复至正常水平、延迟邮件超时窗延至48小时
微软 Microsoft 365 的全球故障 11 月 13 日进入第二天。微软当天上午的官方状态更新称，恢复工作正在受影响的基础设施上分阶段推进，全球遥测与用户报告显示多个工作负载已有逐步改善，但服务健康状况仍不稳定，容量尚未完全恢复至正常水平。
故障始于 11 月 12 日下午，Outlook 邮箱无法打开，Teams、Copilot 等依赖邮件的服务连带受影响，Downdetector 上 Outlook 的故障报告当天下午一度冲上约 13 万条。微软在管理员中心以 EX1550543（Exchange Online）与 MO1550821（Microsoft 365 套件）两个事件编号追踪此次故障。
微软表示，为在恢复期间保护邮件，公司继续优先处理队列与积压，并把邮件超时窗口延长到 48 小时，以保住被延迟的邮件。微软同时表示，目前没有证据显示此次事件与恶意活动有关。
恢复过程并不平顺。微软此前在官方状态账号上说过，被恢复的服务器在重新承接流量后可能再次失去响应，工程师仍在分析诊断数据、寻找触发原因。11 月 13 日清晨 6 时前后，Downdetector 上 Outlook 的报告降至约 1.5 万条，微软称邮箱访问与延迟邮件处理等关键场景已有改善，但部分用户仍可能遇到间歇性问题。
本站 11 月 12 日已报道此次故障的爆发与首轮恢复进展，此为 11 月 13 日的最新状态。微软尚未公布故障根源，承诺在服务恢复后发布事后报告。（来源：微软）
Follow-up: Microsoft 365 Outage Enters a Second Day as Capacity Stays Below Baseline and Email Timeout Is Extended to 48 Hours
Microsoft's global Microsoft 365 outage entered a second day on November 13. In its official status updates that morning, Microsoft said recovery actions were progressing in phases across the affected infrastructure, with global telemetry and customer reports showing incremental improvement in several workloads, but service health remained variable and capacity had not yet fully returned to baseline.
The outage began on the afternoon of November 12, when Outlook mailboxes would not open and email-dependent features in Teams, Copilot and other services were disrupted. Reports for Outlook on Downdetector peaked at around 130,000 that afternoon. Microsoft is tracking the incident as EX1550543 for Exchange Online and MO1550821 for the wider Microsoft 365 suite.
Microsoft said it was continuing to prioritize queue and backlog processing to protect email during recovery, and had extended the email timeout window to 48 hours to preserve delayed messages. The company said it had no evidence of malicious activity associated with the incident.
Recovery has not been smooth. Microsoft said earlier on its official status account that servers returned to service could become unresponsive again once they received traffic, and that engineers were still analyzing diagnostic data to find the trigger. By around 6 a.m. Eastern on November 13, Outlook reports on Downdetector had fallen to about 15,000, and Microsoft said key scenarios including mailbox access and delayed email processing were improving, though some intermittent issues could continue.
GSM reported the outbreak of the outage and the first recovery steps on November 12; this is the latest status as of November 13. Microsoft has not announced a root cause and has promised a post-incident report once service is restored. (Source: Microsoft)
来源：微软
发布：GSM·美国（发布链接）
图片来源：资料图：微软位于华盛顿州 Redmond 的总部园区航拍（2021年9月，东园区当时处于改建中）。Atomic Taco 摄，CC BY-SA 2.0，维基共享资源。 / File photo: Aerial view of Microsoft's headquarters campus in Redmond, Washington, in September 2021, during the East Campus redevelopment. Photo by Atomic Taco, CC BY-SA 2.0, via Wikimedia Commons.
GSM Global · 本篇英文版 English edition of this story
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