StackAI incident

Claude.ai unavailable and elevated errors on the API

Major Resolved View vendor source →

StackAI experienced a major incident on April 28, 2026, lasting —. The incident has been resolved; the full update timeline is below.

Started
Apr 28, 2026, 05:41 PM UTC
Resolved
Apr 28, 2026, 05:41 PM UTC
Duration
—
Detected by Pingoru
Apr 28, 2026, 05:41 PM UTC

Update timeline

  1. resolved Apr 28, 2026, 05:41 PM UTC

    Type: Incident Duration: 3 days, 21 hours and 57 minutes Apr 28, 17:51:36 GMT+0 - Identified - We have identified an issue resulting in elevated errors on the Anthropic API, as well as issues accessing Claude.ai, including log-in paths for Claude Code. We are working to resolve these issues, and will provide an update as soon as possible. Apr 28, 19:15:52 GMT+0 - Resolved - This incident has been resolved. Apr 28, 18:59:47 GMT+0 - Monitoring - We are seeing success rates across all services return to normal, and are monitoring closely to prevent any further issues. Impact occurred from 17:34–18:52 UTC. Apr 28, 18:33:55 GMT+0 - Identified - We are continuing to work to resolve the issues preventing users from accessing Claude.ai, and causing elevated authentication errors for requests to the API and Claude Code. Apr 28, 17:41:55 GMT+0 - Investigating - We are investigating an issue preventing users from reaching Claude.ai, and will provide an update as soon as possible.