Claude AI suffers major outage as thousands report login failures and chat errors worldwide

Claude AI experiences widespread service disruption across multiple platforms

Anthropic's Claude AI chatbot is experiencing a significant AI service outage that began on April 6, 2026, affecting thousands of users globally. The Claude outage triggered a sharp spike in user reports on Downdetector, with numbers climbing to approximately 3,000 reports during peak disruption periods 1

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. This marks one of the most substantial service disruptions for the popular AI chatbot in recent weeks, indicating the issue extends beyond typical capacity problems.

The partial outage has impacted multiple surfaces of the platform, including the web version, mobile app, desktop application, and developer-focused tools such as Claude Code 2

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. According to data from outage trackers, around 50 per cent of user reports cited problems with the chat feature, while 30 per cent encountered issues specifically with Claude Code 3

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. Mobile users accounted for approximately 14 per cent of those reporting outages through the Claude app.

Anthropic confirms elevated errors and login authentication failures

Anthropic has officially acknowledged the widespread login and chat failures on its status page, confirming that the company identified an issue resulting in elevated errors across Claude.ai, including desktop and mobile platforms 2

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. The company stated that users face issues with Chat completion, voice mode engagement, and login authentication across various surfaces. A subsequent update from Anthropic revealed the problem extends beyond the main chatbot interface, noting that "this issue additionally affects login on other surfaces, such as Claude.code."

Some users specifically reported encountering API Error 401 messages when attempting to access the service through the desktop app and coding interface . Community reports suggest the service disruption may be fluctuating, with some users experiencing brief recovery periods followed by renewed login failures. This intermittent pattern indicates the complexity of the underlying technical issue affecting the platform.

Impact on developers and coding workflows raises concerns

The Claude AI Down incident has particularly significant implications for developers who rely on Claude Code for their coding workflows. The outage affecting login authentication on developer-focused AI tools disrupts professional workflows and highlights the growing dependency on AI chatbot services for technical tasks 2

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. As more developers integrate AI assistants into their daily work, service reliability becomes increasingly critical for productivity.

Anthropic, typically known for its responsive approach to technical issues, has stated it is actively working to resolve the problem but has not provided an exact resolution timeline 1

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. The official incident remains marked as unresolved on the status page, with engineers continuing to investigate and apply fixes. For affected users, monitoring outage updates through Anthropic's official channels remains the recommended course of action while the company works to stabilize the platform.