Outage in Claude

Elevated errors on Claude Sonnet 4.6

Resolved Minor

March 12, 2026 - Started 1 day ago - Lasted about 3 hours
Official incident page

Incident Report

Summary AI Generated

Claude Sonnet 4.6 experienced elevated errors starting at 9:27 PT, affecting both claude.ai and api.anthropic.com services. This was a repeat of an earlier issue that occurred the same day. The incident was resolved after 3.2 hours of service disruption.

A repeat of an earlier issue today started at 9:27 PT / 16:27 UTC.

Components affected

Claude claude.ai Claude api.anthropic.com

Latest Updates ( sorted recent to last )

RESOLVED 1 day ago - at 03/12/2026 07:48PM

This incident has been resolved.

IDENTIFIED 1 day ago - at 03/12/2026 04:34PM

A repeat of an earlier issue today started at 9:27 PT / 16:27 UTC.

source IsDown Claude.ai service outage and delays Reports started about 1 hour before official outage was reported

Users report Claude.ai not responding or executing, likely due to high demand or maintenance. Experiences frequent errors and prolonged loading times.

Latest Claude outages

Elevated errors on Claude Opus 4.6 and Sonnet 4.6 - about 2 hours ago

Elevated errors on Claude.ai (including login issues for Claude Code) - 2 days ago

Elevated errors on Claude Haiku 4.5 - 6 days ago

Filesystem connector missing from Claude Desktop - 7 days ago

Elevated TCP three-way handshake failures on api.anthropic.com - 7 days ago

Stop wasting hours on 'is it us or them?'

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