Partial outageAnthropic ・ September 10, 2026

Degraded functionality for Claude Cowork on Windows

A record of the Anthropic incident on September 10, 2026 (UTC): start time, duration and severity, plus current status, what to do, and alternatives.

Started
Sep 10, 2026, 03:54 PM UTC
Resolved
Sep 14, 2026, 07:14 PM UTC
Duration
99h 21m
Impact
Partial outage

Other providers down at the same time

5 other incident(s) at different providers overlapped with this one. It may not have been limited to a single service — several providers were degraded at once.

Derived from our own archive of official status pages across 13 providers. Items lasting more than 24 hours and unresolved items are excluded, as they would misrepresent the moment.

How big was this outage?

This outage lasted 5961 minutes. Across 70 major incidents recorded for Anthropic, the median duration is 73 minutes, making this the 3th longest.

Longer than a typical outage.

Only incidents recorded as major-or-worse and already resolved are counted.

Current status

Anthropic is operating normally now. This incident has been resolved.

See current Anthropic status →

What you can do during an outage

Source: Anthropic's official status page.

Other Anthropic incidents

  1. Elevated errors for Claude Sonnet 5.5October 27, 2026
  2. Elevated errors for Claude Sonnet 5.5October 27, 2026
  3. Elevated errors for Claude Fable 5.1October 25, 2026
  4. Elevated errors for Claude Sonnet 5.5 and other modelsOctober 25, 2026
  5. Elevated errors for Claude Fable 5 and Claude Fable 5.1October 24, 2026