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Anthropic Outage History

Every past Anthropic outage tracked by IsDown, with detection times, duration, and resolution details.

There were 637 Anthropic outages since March 2024. The 398 outages from the last 12 months are summarized below, with incident details, duration, and resolution information.

Minor April 17, 2026

April 2026: Errors uploading documents to Google Drive in Claude.ai

Detected Apr 17, 2026 2:59 PM EDT · Resolved Apr 17, 2026 4:00 PM EDT · Duration about 1 hour

Anthropic experienced a 1-hour service incident where users encountered errors when uploading documents to Google Drive from Claude.ai, including the desktop app and Cowork features. The issue affected console.anthropic.com, api.anthropic.com, and claude.ai platforms. The Google Drive upload functionality was successfully restored and the incident was resolved.

Minor April 16, 2026

April 2026: Failures to add Credentials to Vaults

Detected Apr 16, 2026 6:26 PM EDT · Resolved Apr 16, 2026 6:44 PM EDT · Duration 19 minutes

Anthropic experienced a minor incident where users were unable to add credentials to vaults through the console.anthropic.com interface. The issue affected the credential management functionality for 19 minutes before being resolved with an implemented fix.

Major April 16, 2026

April 2026: Claude Cowork not starting for some users

Detected Apr 16, 2026 3:24 PM EDT · Resolved Apr 16, 2026 5:32 PM EDT · Duration about 2 hours

Claude Desktop's Cowork feature failed to start for some users on version v1.3036.0, preventing access to collaborative functionality. The issue was identified and resolved through a software update to version v1.3109.0, with users instructed to check for updates to restore service.

Minor April 16, 2026

April 2026: Opus 4.6 elevated rate of errors

Detected Apr 16, 2026 2:50 AM EDT · Resolved Apr 16, 2026 3:46 AM EDT · Duration about 1 hour

Anthropic's Opus 4.6 model experienced an elevated rate of errors affecting the console, API, and Claude.ai for 56 minutes. The issue was identified and a fix was implemented to resolve the outage. Service was restored after the problem was addressed.

Major April 15, 2026

April 2026: Elevated errors on Claude.ai, API, Claude Code

Detected Apr 15, 2026 10:53 AM EDT · Resolved Apr 15, 2026 1:45 PM EDT · Duration about 3 hours

Anthropic experienced elevated errors across Claude.ai, API, and Claude Code for 2.9 hours, causing login failures, API 500 errors, and preventing users from running scheduled tasks or downloading outputs. The Claude API recovered first, followed by stabilization of login services, with the incident fully resolved after implementing a fix for the identified issue.

Minor April 14, 2026

April 2026: Degraded service on usage and analytics admin API endpoints

Detected Apr 14, 2026 5:24 AM EDT · Resolved Apr 14, 2026 11:21 AM EDT · Duration about 6 hours

Anthropic experienced degraded performance on usage and analytics admin API endpoints, causing intermittent 503 errors that affected claude.ai, api.anthropic.com, and console.anthropic.com. The root cause was identified and fixes were deployed through the pipeline over approximately 6 hours. The incident was fully resolved after monitoring confirmed the fix was effective.

Major April 13, 2026

April 2026: Claude.ai down

Detected Apr 13, 2026 11:40 AM EDT · Resolved Apr 13, 2026 12:37 PM EDT · Duration about 1 hour

Anthropic experienced a major outage affecting Claude.ai, the API, and console, with elevated login errors preventing users from accessing Claude.ai and Claude Code services. The incident lasted 57 minutes, from 15:31 to 16:19 UTC on April 13th, 2026. The issue was identified and resolved with a fix applied to restore normal login functionality across all affected services.

Minor April 10, 2026

April 2026: Elevated errors on requests to Claude models

Detected Apr 10, 2026 12:30 PM EDT · Resolved Apr 10, 2026 12:52 PM EDT · Duration 22 minutes

Anthropic experienced elevated errors affecting requests to Claude models across all products including claude.ai, API, and console for 22 minutes. The issue was identified as specifically affecting non-Opus models (all models except Claude Opus 4.6 continued working normally). The problem was fully resolved after the team implemented a fix for the affected model endpoints.

Minor April 10, 2026

April 2026: Degraded Performance on Vaults

Detected Apr 10, 2026 12:28 AM EDT · Resolved Apr 10, 2026 12:39 AM EDT · Duration 12 minutes

Anthropic experienced degraded performance on their Vaults feature affecting console.anthropic.com for 12 minutes. The issue was investigated and resolved without further details provided about the specific cause or impact scope.

Minor April 9, 2026

April 2026: Elevated Connector Error Rates

Detected Apr 9, 2026 12:54 PM EDT · Resolved Apr 9, 2026 1:37 PM EDT · Duration 43 minutes

Anthropic experienced elevated error rates affecting certain connectors for 43 minutes on April 9th, 2026. The issue impacted both claude.ai and api.anthropic.com services. The incident was resolved after investigation and remediation efforts.