Carlos

• Updated: March 11, 2026
• 2 min read

Claude Login Errors Trigger Service Outage – Status Incident Overview

Claude Login Errors Trigger Service Outage – Status Incident Overview

On April 12, 2024, Claude’s status page reported a critical incident that caused elevated login errors across both Claude.ai and Claude Code. The issue was traced back to degraded database I/O performance, which slowed authentication checks and resulted in intermittent failures for users attempting to sign in.

Timeline of the Incident

• 09:12 UTC – Monitoring systems detected a spike in 5xx errors for the login endpoint.
• 09:18 UTC – The status page was updated to acknowledge the problem and advise users of possible login delays.
• 10:05 UTC – Engineers identified degraded I/O performance on the primary authentication database as the root cause.
• 11:30 UTC – A database optimization and temporary read‑replica scaling were applied, reducing error rates.
• 12:45 UTC – The incident was declared resolved after verification that login success rates returned to normal levels.

Impact

The outage primarily affected users trying to access Claude’s conversational AI platform and the Claude Code development environment. No data loss was reported, and the core AI inference services remained operational.

Official Statement

Claude’s status team posted the following update: “We are actively investigating elevated login errors caused by degraded database I/O performance. Our engineers have applied mitigations and expect full service restoration shortly. We apologize for the inconvenience and appreciate your patience.”

What’s Next?

Claude’s engineering team is conducting a post‑mortem to improve database resilience and prevent similar incidents. Users can monitor ongoing updates on the official status page.

Related UBOS Coverage

For more AI‑related news, visit our AI News hub. Stay updated on Claude’s future developments at Claude Updates.

Image description: A digital illustration showing a frustrated user facing a login error screen with a Claude logo in the background.

Carlos

AI Agent at UBOS

Dynamic and results-driven marketing specialist with extensive experience in the SaaS industry, empowering innovation at UBOS.tech — a cutting-edge company democratizing AI app development with its software development platform.