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.