Sep 29, 16:27 UTC
Resolved - The issue affecting Claude.ai, the Claude desktop and mobile apps, Claude Code, Claude Cowork, and the Claude API has been resolved, and services have been operating normally since recovery. Impact occurred from 07:00 PT / 14:00 UTC to 07:59 PT / 14:59 UTC.

Sep 29, 15:30 UTC
Update - All services have been operating normally since 14:59 UTC. We are continuing to monitor.

Sep 29, 15:11 UTC
Monitoring - Most services have recovered as of 14:59 UTC. Signing in, starting new chats, voice conversations, Claude Code and Cowork sessions, purchases and file uploads are working again. Some messages sent between 14:00 and 14:59 UTC may not have been saved. We are monitoring closely and will post another update within 30 minutes.

Sep 29, 15:00 UTC
Update - The errors that began at 14:00 UTC were mitigated at 14:36 UTC, and existing conversations are mostly working again. A second issue is preventing many users from signing in (single sign-on and Sign in with Apple are unavailable), starting new chats, voice conversations and Claude Code or Cowork sessions, making purchases, and uploading files. If you're signed in, please don't sign out. We're working on a fix and will post another update within 30 minutes.

Sep 29, 14:41 UTC
Update - We have applied a mitigation and error rates have dropped substantially. Some sign-in attempts, account actions and Claude Code and Cowork sessions are still failing. We are continuing to work on a full fix.

Sep 29, 14:30 UTC
Update - We are investigating reports of degraded performance affecting claude.ai, platform.claude.com, the Claude API, Claude Code, and Claude Cowork. We will provide an update as soon as possible.

Sep 29, 14:28 UTC
Update - We are investigating elevated error rates affecting Claude.ai (including the desktop and mobile apps), Claude Code and Claude Cowork. Some requests to the Claude API are also returning errors. We will provide an update as soon as possible.

Sep 29, 14:21 UTC
Investigating - We are investigating elevated error rates affecting Claude.ai (including the desktop and mobile apps), Claude Code and Claude Cowork. Users may see failed requests, errors loading or sending conversations, or be asked to sign in again; retrying may succeed. We will provide an update as soon as possible.

Sep 22, 02:35 UTC
Resolved - This issue has been resolved. Impact occurred from 5:50pm PT / 00:50 UTC to 7:10pm PT / 02:10 UTC.

Sep 22, 02:11 UTC
Monitoring - We have seen success rates return to normal across affected models, and are monitoring closely to ensure no further issues.

Sep 22, 01:35 UTC
Update - We are continuing to work to resolve errors affecting some models. At this time, requests to Claude Fable 5 and 5.1 and Mythos 5 and 5.1 have returned to normal success rates. We are working to resolve remaining errors affecting Claude Opus 5, and will provide an additional update shortly.

Sep 22, 01:17 UTC
Identified - We have identified the cause of elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5 and are working on a fix. We will provide an update as soon as possible.

Sep 22, 00:57 UTC
Investigating - We are investigating elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5. We will provide an update as soon as possible.

Sep 16, 16:51 UTC
Resolved - This issue has been resolved.

Sep 16, 16:18 UTC
Identified - We are aware of an issue affecting users interacting with subscriptions via Google Play, such as when creating a new subscription on Android devices. Google has confirmed an issue with Google Play, and we are awaiting their further updates.

Sep 15, 11:14 UTC
Resolved - A fix has been deployed for Claude Mythos 5.1 and Claude Fable 5.1 and we are monitoring to ensure it has resolved the issue.

Sep 15, 10:50 UTC
Monitoring - A fix has been deployed for Claude Mythos 5.1 and Claude Fable 5.1 and we are monitoring to ensure it has resolved the issue.

Sep 15, 09:52 UTC
Update - We are investigating elevated errors on requests to Claude Mythos 5.1 and Claude Fable 5.1. We will provide an update as soon as possible.

Sep 15, 09:48 UTC
Investigating - We are investigating elevated errors on requests to Claude Mythos 5.1 and Claude Fable 5.1. We will provide an update as soon as possible.

Sep 11, 14:37 UTC
Resolved - The issue affecting Claude services has been resolved. Impact occurred from 13:57 to 14:20 UTC

Sep 11, 14:28 UTC
Update - A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery.

Sep 11, 14:28 UTC
Monitoring - A fix has been deployed for Claude Mythos 5.1 and Claude Fable 5.1 and we are monitoring for recovery.

Sep 11, 14:21 UTC
Identified - We have identified the cause of elevated errors on requests to Claude Mythos 5.1 and Claude Fable 5.1 and are working on a fix. We will provide an update as soon as possible.

Sep 11, 14:19 UTC
Investigating - We are investigating elevated errors on requests to Claude Fable 5.1 and Claude Mythos 5.1. We will provide an update as soon as possible.

Sep 10, 23:24 UTC
Resolved - The issue affecting Claude services has been mitigated.

Sep 10, 21:43 UTC
Identified - We are experiencing slower than normal response times on the Claude API for some customers whose traffic enters through the US Midwest. Users may experience elevated latency and some request timeouts.

Sep 14, 19:14 UTC
Resolved - This issue has been resolved. Microsoft has released a September 14 Windows update that fixes it: https://support.microsoft.com/en-us/servicing/os/windows-11/2026/09/kb5129195-windows-11-24h2-25h2-security-update

Sep 10, 15:54 UTC
Identified - A Windows update released September 8 has left Claude Cowork on Windows unable to run local commands, because its workspace can no longer reach your computer's drive. For most users, chat and file reading and editing still work. There's no in-app workaround yet, and restarting or reinstalling won't help. Microsoft has developed a fix and is working to release it. We'll post an update when we have more to share.

Sep 3, 16:23 UTC
Resolved - The issue affecting Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5 has been resolved. Impact has ended as of 9:16 PT / 16:16 UTC.

Sep 3, 16:06 UTC
Monitoring - A fix has been deployed for Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5 and we are monitoring for recovery.

Sep 3, 15:25 UTC
Update - The only affected models right now are Opus 4.8 and Opus 5. The rest of the models have recovered to baseline error rate.

Sep 3, 14:49 UTC
Update - We are continuing to work on a fix for this issue.

Sep 3, 13:50 UTC
Update - An exhaustive list of affected models: Mythos/Fable 5.1, Mythos/Fable 5, Opus 5, Opus 4.8, Opus 4.6.

Sep 3, 13:41 UTC
Identified - We have identified the cause of elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5 and are working on a fix. We will provide an update as soon as possible.

Sep 3, 13:26 UTC
Investigating - We are investigating elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5. We will provide an update as soon as possible.

Sep 3, 12:56 UTC
Resolved - This incident has been resolved.

Sep 3, 12:47 UTC
Monitoring - A fix has been implemented and we are monitoring the results.

Sep 3, 12:37 UTC
Investigating - We are investigating elevated errors on requests to Claude Sonnet 5. We will provide an update as soon as possible.

Sep 2, 21:44 UTC
Resolved - The issue affecting Claude Sonnet 5 has been resolved. Impact occurred from 2:05pm PT / 21:05 UTC to 2:19pm PT / 21:19 UTC.

Sep 2, 21:17 UTC
Investigating - We are investigating elevated errors on requests to Claude Sonnet 5. We will provide an update as soon as possible.

Sep 2, 01:24 UTC
Resolved - This issue has been resolved.

Sep 1, 23:26 UTC
Monitoring - We have identified and resolved an issue where users who reached a balance of zero usage credits saw delays in the availability of newly purchased credits, resulting in some requests to the Claude API receiving 'credit balance is too low' errors erroneously. This affected credits purchased from 05:10am PT / 12:10 UTC to 2:35pm PT / 21:35 UTC. At this time, newly purchased credits should be available as expected and we are working to resolve any remaining impact.

Sep 1, 18:07 UTC
Resolved - This issue has been resolved.

Sep 1, 17:52 UTC
Monitoring - We are seeing success rates recover across affected services. Core inference and the API are not impacted.

Sep 1, 17:05 UTC
Investigating - We are investigating reports of degraded performance affecting some Claude services, including docs.claude.com. We are working to resolve these issues and will provide an update as soon as possible.

Sep 1, 16:22 UTC
Resolved - This issue has been resolved.

Sep 1, 16:02 UTC
Investigating - We are investigating elevated errors affecting Claude for Microsoft Office 365. We will provide an update as soon as possible.

Aug 31, 20:36 UTC
Resolved - The issue affecting Claude Code has been resolved. Impact occurred from 16∶55 to 19∶16 UTC.

Aug 31, 19:21 UTC
Investigating - We are investigating reports of degraded performance affecting Claude in Slack, Claude Code on the web, and Code Review. We will provide an update as soon as possible.

Aug 31, 17:52 UTC
Resolved - This issue has been resolved.

Aug 31, 17:32 UTC
Monitoring - We have seen success rates return to normal for requests on Claude.ai and are monitoring closely.

Aug 31, 17:23 UTC
Investigating - We are investigating reports of elevated errors affecting chats on claude.ai. We will provide an update as soon as possible.

Aug 28, 20:21 UTC
Resolved - The issue affecting Claude Cowork and Claude Code on the web has been resolved.

Aug 28, 18:21 UTC
Monitoring - A mitigation has been applied for the issue affecting Claude Cowork and Claude Code on the web, and we are monitoring for recovery. Sessions that disconnected earlier can be retried

Aug 28, 17:22 UTC
Identified - We have identified an issue with an upstream cloud provider affecting Claude Cowork and Claude Code on the web. Some sessions may fail to start or disconnect mid-task; affected sessions can be retried. We are in contact with the provider and will provide an update as soon as possible.

Aug 24, 20:26 UTC
Resolved - This issue has been resolved.

Aug 24, 20:11 UTC
Monitoring - We have identified and resolved an issue which resulted in errors when attempting to access Claude.ai, including logging in via subscriptions for Claude Code. Errors occurred between 1:00pm (20:00 UTC) through 1:08pm PT (20:08 UTC). We are monitoring closely to ensure no further issues.

Aug 24, 17:16 UTC
Resolved - This issue has been resolved.

Aug 24, 17:12 UTC
Investigating - From 9:02–9:08am PT / 16:02–16:08 UTC) users experienced issues when logging into Claude.ai, including for connecting Claude Code with subscription. At this time, this issue has been resolved, but we are continuing to investigate a potential issue impacting users of the Claude.ai desktop application.

Aug 24, 08:30 UTC
Resolved - This issue has been resolved. From 9:50pm PT / 04:50 UTC through 00:36am PT / 07:36 UTC, users saw elevated errors on requests to Claude models, including Claude Opus 5 and Fable 5.

Aug 24, 07:47 UTC
Update - At this time, we have seen errors stabilize on Opus 5 and Fable 5, and are working to fully resolve success rates on all affected models. We will provide an update as soon as possible.

Aug 24, 06:42 UTC
Update - We are continuing to work to resolve issues causing elevated requests on multiple models. We will provide an update as soon as possible.

Aug 24, 05:27 UTC
Identified - We have identified the cause of elevated errors on requests to Claude Mythos 5, Claude Fable 5, Claude Opus 5, and other Claude models and are working on a fix. We will provide an update as soon as possible.

Aug 24, 05:06 UTC
Investigating - We are investigating elevated errors on requests to Claude Mythos 5, Claude Fable 5, Claude Opus 5, and Claude Opus 4.8. We will provide an update as soon as possible.

Aug 20, 19:42 UTC
Resolved - This issue has been resolved.

Aug 20, 19:16 UTC
Investigating - We are investigating elevated errors on requests to some Claude models. We will provide additional updates as soon as possible.