System Disruption Detected

Investigating: We are investigating reports of degraded performance affecting claude.ai, the Claude API, and Claude Code. We will provide an update as soon as possible.

Resolved: The issue affecting claude.ai and Claude Cowork has been resolved.

Monitoring: A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery.

Investigating: We are investigating an issue with users authenticating to Claude.ai and Claude Code. We will provide an update as soon as possible.

Identified: This issue is caused by a Microsoft 365 service incident, and mail, calendar and search tools in the Microsoft 365 connector are still failing for most requests. Claude for Outlook remains affected. You can follow Microsoft's progress at https://status.cloud.microsoft. We will update this post when service is restored.

Identified: We are continuing to work with our upstream provider, who is restarting affected servers. Mail, calendar and search tools in the Microsoft 365 connector are still failing for most requests, and Claude for Outlook remains affected. We will provide another update as soon as we have more information.

Identified: We are continuing to work with our upstream provider on this issue. Mail, calendar and search tools in the Microsoft 365 connector are still failing for most requests. Claude for Outlook is also affected: mail and calendar actions may fail, and some users may not be able to open the add-in. We will provide another update within the hour.

Identified: We have identified an issue with an upstream provider affecting the Microsoft 365 connector. Mail, calendar and search tools are failing for most requests, and new connections to the connector may not complete. We are in contact with them and will provide an update as soon as possible.

Resolved: Overloaded errors on Fable 5.2 and Mythos 5.2 for four minutes. Incident has been mitigated.

Resolved: The issue affecting claude.ai, the Claude API, Claude Code, and Claude Cowork has been resolved. Impact occurred from 00:18 PT / 08:18 UTC on Nov 8 to 00:32 PT / 08:32 UTC on Nov 8.

Monitoring: A fix has been deployed for Claude Fable 5.1 and we are monitoring for recovery.

Investigating: We are investigating elevated errors on requests to Claude Fable 5.1. We will provide an update as soon as possible.

Resolved: The issue affecting the Google Calendar connector on claude.ai, Claude Code, and Claude Cowork has been resolved. Impact occurred from 04:07 PT / 11:07 UTC on October 26 to 11:52 PT / 18:52 UTC on October 28.

Monitoring: We are seeing recovery for errors affecting the Google Calendar connector, and error rates have returned to normal levels. We are continuing to monitor with our upstream provider.

Investigating: We are continuing to investigate elevated errors affecting the Google Calendar connector, and are working with our upstream provider. We will provide another update as soon as we have more information.

Investigating: We are investigating elevated errors affecting the Google Calendar connector. Some requests to list or search calendar events have been failing since October 26. We will provide an update as soon as possible.

Resolved: The issue affecting the Gmail connector on claude.ai, Claude Code, and Claude Cowork has been resolved. Impact occurred from 16:00 PT / 23:00 UTC on October 27 to 22:29 PT on October 27 / 05:29 UTC on October 28.

Investigating: We are investigating elevated errors when searching and reading email with the Gmail connector. This issue does not affect other connectors.

Investigating: We are investigating elevated errors when searching and reading email with the Gmail connector. This issue does not affect other connectors. We will provide an update as soon as possible.

Resolved: The issue affecting claude.ai, the Claude API, Claude Code, and Claude Cowork has been resolved. Impact occurred from 07:42 PT / 14:42 UTC to 08:17 PT / 15:17 UTC.

Identified: We are investigating elevated errors on requests to Claude Sonnet 5.5. We will provide an update as soon as possible.

Resolved: The issue affecting Claude services has been resolved.

Monitoring: A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery.

Investigating: We are investigating elevated errors on requests to Claude Sonnet 5.5. We will provide an update as soon as possible.

Resolved: The issue affecting Claude services has been resolved. Impact occurred from 01:08 PT / 08:08 UTC to 01:29 PT / 08:29 UTC.

Monitoring: A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery.

Identified: We have identified the cause of elevated errors on requests to Claude Fable 5.1 and are working on a fix. We will provide an update as soon as possible.

Investigating: We are investigating elevated errors on requests to Claude Fable 5.1. We will provide an update as soon as possible.

Resolved: The issue affecting Claude services has been resolved. Impact occurred from 23:05 PT on October 24 / 06:05 UTC on October 25 to 23:35 PT on October 24 / 06:35 UTC on October 25.

Monitoring: A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery.

Identified: We have identified the cause of elevated errors on requests to Claude Sonnet 5.5 and are working on a fix. We will provide an update as soon as possible.

Investigating: We are investigating elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, Claude Opus 5.5, Claude Sonnet 5.5, and Claude Haiku 5.5. We will provide an update as soon as possible.

Resolved: The issue affecting Claude services has been resolved. Impact occurred from 22:00 PT on October 23 / 05:00 UTC on October 24 to 22:35 PT on October 23 / 05:35 UTC on October 24.

Monitoring: A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery.

Identified: We have identified the cause of elevated errors on requests to other Claude models and are working on a fix. We will provide an update as soon as possible.

Identified: We have identified the cause of elevated errors on requests to other Claude models and are working on a fix. We will provide an update as soon as possible.

Resolved: The issue affecting Claude Opus 5.5 has been resolved. Impact occurred from 17:23 PT on October 23 / 00:23 UTC on October 24 to 17:34 PT on October 23 / 00:34 UTC on October 24.

Investigating: We are investigating elevated errors on requests to Claude Opus 5.5. We will provide an update as soon as possible.

Resolved: The issue affecting Claude models has been resolved. Impact occurred from 16:28 PT / 23:28 UTC on October 23 to 16:59 PT / 23:59 UTC on October 23.

Monitoring: We are seeing success rates return to normal for all affected models, and are continuing to monitor to ensure no further issues.

Identified: We have identified the cause of elevated errors on requests to Claude Fable 5.1, Sonnet 5.5, and Haiku 5.5, as well as fast mode requests to Opus 5.5 and are working on a fix. We will provide an update as soon as possible.

Investigating: We are investigating elevated errors on requests to Claude Fable 5.1. We will provide an update as soon as possible.

Resolved: The issue affecting claude.ai and Claude Cowork has been resolved.

Monitoring: A fix has been deployed for the issue affecting claude.ai and Claude Cowork and we are monitoring for recovery.

Investigating: We are investigating elevated errors affecting connectors. We will provide an update as soon as possible.

Resolved: The issue affecting other Claude models has been resolved.

Investigating: We are investigating elevated errors on requests to Claude Fable 5. We will provide an update as soon as possible.

Resolved: This issue has been resolved.

Monitoring: We've mitigated the errors loading usage data on platform.claude.com and in the Admin API usage report. While we work on a full fix, the most recent ~30 minutes of usage may take longer to appear on the platform.claude.com. API requests are not affected, and we will provide additional updates here.

Identified: We've identified the cause of errors loading usage data. The Admin API usage report has recovered, and fixes for the platform.claude.com Usage and Rate limits pages are in progress. The most recent 30 minutes of usage may be delayed. Core functionality is not affected.

Investigating: We are continuing to work on elevated errors affecting usage data on the platform.claude.com Usage and Rate limits pages and the Admin API usage report. A mitigation for the Usage page and the Admin API usage report is rolling out; once it is in place, the most recent usage may take about 30 minutes to appear there. Core functionality is not affected.

Resolved: We have identified an issue which resulted in some organizations to be incorrectly paused for having reached their spend limit, resulting in refused requests on the Claude API, Claude.ai, Claude Code, Claude Security, and Claude Cowork. This is now resolved.

Resolved: This incident has been resolved. From 17:00 PT on October 6 / 00:00 UTC on October 7 to 18:40 PT on October 6 / 01:40 UTC on October 7, many requests to load usage data on the platform.claude.com Usage page and the Admin API usage report returned errors.

Investigating: We are investigating elevated errors loading usage data on the platform.claude.com Usage page and the Admin API usage report endpoint since 5 PM PT. Messages API requests are not affected. We will provide an update as soon as possible.

Resolved: The issue affecting Claude Opus 5.5 has been resolved.

Identified: We have identified the cause of elevated errors on requests to Claude Opus 5.5 and are working on a fix. We will provide an update as soon as possible.

Investigating: We are investigating elevated errors on requests to Claude Opus 5.5. We will provide an update as soon as possible.