Outage in Anthropic

Elevated errors across surfaces

Resolved Major

March 18, 2026 - Started about 21 hours ago - Lasted about 1 hour
Official incident page

Incident Report

Summary AI Generated

Anthropic experienced elevated authentication errors across Claude.ai, console.anthropic.com, and api.anthropic.com from 23:59–00:30 UTC on March 19, 2026. Users were unable to authenticate properly when trying to access various Claude surfaces including Claude.ai and Claude Code. The authentication issue was resolved after 1.2 hours, with Anthropic monitoring the systems to ensure stability.

We are currently investigating this issue. Our team is actively working to identify the root cause.

Components affected

Anthropic claude.ai Anthropic console.anthropic.com Anthropic api.anthropic.com

Need to monitor Anthropic outages?

Monitor all your external dependencies in one place
Get instant alerts when outages are detected
Be the first to know if service is down
Show real-time status on private or public status page
Keep your team informed

Start monitoring for free

Latest Updates ( sorted recent to last )

RESOLVED about 20 hours ago - at 03/19/2026 01:38AM

This incident has been resolved.

MONITORING about 20 hours ago - at 03/19/2026 01:21AM

From 23:59–00:30 UTC, users experienced elevated errors when trying to authenticate across various Claude surfaces including Claude.ai and Claude Code. This issue has been resolved, and we are monitoring closely to ensure no further issues.

INVESTIGATING about 21 hours ago - at 03/19/2026 12:28AM

We are currently investigating this issue. Our team is actively working to identify the root cause.

Latest Anthropic outages

Elevated errors on Claude Opus 4.6 - about 6 hours ago

Elevated errors on Claude Sonnet 4.6 - about 6 hours ago

Elevated errors on Claude.ai - about 21 hours ago

Elevated errors on Claude.ai - 1 day ago

Increased errors on Opus 4.6 - 1 day ago

The Status Page Aggregator with Early Outage Detection

With IsDown, you can monitor all your critical services' official status pages from one centralized dashboard and receive instant alerts the moment an outage is detected. Say goodbye to constantly checking multiple sites for updates and stay ahead of outages with IsDown.

Start free trial

No credit card required · Cancel anytime · 6020 services available

Integrations with Slack Microsoft Teams Google Chat Datadog PagerDuty Zapier Discord Webhook