Microsoft outage disrupts Outlook, Teams and AI services worldwide
Microsoft 365 users across India and other regions faced a major disruption on November 12 and 13, affecting Outlook, Teams, Copilot, SharePoint and other workplace services. The outage lasted more than 10 hours, leaving users unable to access emails, calendars and other tools. Reports of problems surged across outage-tracking platforms, with Outlook issues peaking at over 130,000 reports in the US and 1,817 in India.
What Caused the Microsoft Outage?
Microsoft identified unusually high infrastructure load across multiple regions, initially attempting to restore services by redirecting traffic and restarting affected servers. Further investigation revealed that several servers had unexpectedly become unavailable, placing additional pressure on the remaining infrastructure. A problem with the server-health monitoring process may also have contributed to servers becoming unresponsive. Microsoft paused deployments, shifted traffic away from affected infrastructure and tested an alternative health-checking method to bring servers back online.
Which Microsoft Services Are Affected?
The disruption affected Outlook, Exchange Online, Copilot, SharePoint Online, Microsoft Defender, Planner and To Do. Teams users experienced problems with features dependent on Exchange Online, including calendars, meeting scheduling and certain organisational chats, although core messaging and online meetings largely continued working. Some users also faced delayed email delivery, difficulties accessing recently used files and problems loading Microsoft 365 administration pages.
OpenAI and Anthropic Services Also Affected
The outage extended to third-party services relying on Microsoft 365 connectors. OpenAI reported problems with its Microsoft connectors, preventing some users from establishing new connections and affecting certain tools. Anthropic also reported disruptions to its Microsoft 365 connector, with email, calendar and search functions failing for many requests. Claude for Outlook was affected as well, leaving some users unable to access its add-in or use its email and calendar features.
Microsoft 365 users across India and other regions faced a major disruption on November 12 and 13, affecting Outlook, Teams, Copilot, SharePoint and other workplace services. The outage lasted more than 10 hours, leaving users unable to access emails, calendars and other tools. Reports of problems surged across outage-tracking platforms, with Outlook issues peaking at over 130,000 reports in the US and 1,817 in India.
What Caused the Microsoft Outage?
Microsoft identified unusually high infrastructure load across multiple regions, initially attempting to restore services by redirecting traffic and restarting affected servers. Further investigation revealed that several servers had unexpectedly become unavailable, placing additional pressure on the remaining infrastructure. A problem with the server-health monitoring process may also have contributed to servers becoming unresponsive. Microsoft paused deployments, shifted traffic away from affected infrastructure and tested an alternative health-checking method to bring servers back online.
Which Microsoft Services Are Affected?
The disruption affected Outlook, Exchange Online, Copilot, SharePoint Online, Microsoft Defender, Planner and To Do. Teams users experienced problems with features dependent on Exchange Online, including calendars, meeting scheduling and certain organisational chats, although core messaging and online meetings largely continued working. Some users also faced delayed email delivery, difficulties accessing recently used files and problems loading Microsoft 365 administration pages.
OpenAI and Anthropic Services Also Affected
The outage extended to third-party services relying on Microsoft 365 connectors. OpenAI reported problems with its Microsoft connectors, preventing some users from establishing new connections and affecting certain tools. Anthropic also reported disruptions to its Microsoft 365 connector, with email, calendar and search functions failing for many requests. Claude for Outlook was affected as well, leaving some users unable to access its add-in or use its email and calendar features.
Microsoft identified unusually high infrastructure load across multiple regions, initially attempting to restore services by redirecting traffic and restarting affected servers. Further investigation revealed that several servers had unexpectedly become unavailable, placing additional pressure on the remaining infrastructure. A problem with the server-health monitoring process may also have contributed to servers becoming unresponsive. Microsoft paused deployments, shifted traffic away from affected infrastructure and tested an alternative health-checking method to bring servers back online.
Which Microsoft Services Are Affected?
The disruption affected Outlook, Exchange Online, Copilot, SharePoint Online, Microsoft Defender, Planner and To Do. Teams users experienced problems with features dependent on Exchange Online, including calendars, meeting scheduling and certain organisational chats, although core messaging and online meetings largely continued working. Some users also faced delayed email delivery, difficulties accessing recently used files and problems loading Microsoft 365 administration pages.
OpenAI and Anthropic Services Also Affected
The outage extended to third-party services relying on Microsoft 365 connectors. OpenAI reported problems with its Microsoft connectors, preventing some users from establishing new connections and affecting certain tools. Anthropic also reported disruptions to its Microsoft 365 connector, with email, calendar and search functions failing for many requests. Claude for Outlook was affected as well, leaving some users unable to access its add-in or use its email and calendar features.
The disruption affected Outlook, Exchange Online, Copilot, SharePoint Online, Microsoft Defender, Planner and To Do. Teams users experienced problems with features dependent on Exchange Online, including calendars, meeting scheduling and certain organisational chats, although core messaging and online meetings largely continued working. Some users also faced delayed email delivery, difficulties accessing recently used files and problems loading Microsoft 365 administration pages.
OpenAI and Anthropic Services Also Affected
The outage extended to third-party services relying on Microsoft 365 connectors. OpenAI reported problems with its Microsoft connectors, preventing some users from establishing new connections and affecting certain tools. Anthropic also reported disruptions to its Microsoft 365 connector, with email, calendar and search functions failing for many requests. Claude for Outlook was affected as well, leaving some users unable to access its add-in or use its email and calendar features.
The outage extended to third-party services relying on Microsoft 365 connectors. OpenAI reported problems with its Microsoft connectors, preventing some users from establishing new connections and affecting certain tools. Anthropic also reported disruptions to its Microsoft 365 connector, with email, calendar and search functions failing for many requests. Claude for Outlook was affected as well, leaving some users unable to access its add-in or use its email and calendar features.
Add New Comment