Which Anthropic services were affected by the outage?

Claude.ai, Claude Code, and Claude Cowork experienced disruptions, while the API and management console remained operational.

How long did the Claude outage last?

The outage began at 23:58 MSK and was fully resolved within approximately 40 minutes.

Has the cause of the Anthropic service outage been identified?

Anthropic has not disclosed the root cause but continues its investigation.

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Artificial intelligence

Anthropic Services Down: Major Outage Affects Claude AI

August 17, 2026

Photo: BleepingComputer

Quick answer

On August 16, 2026, Anthropic's services—including Claude.ai, Claude Code, and Claude Cowork—experienced a major outage, causing authentication and performance issues.

Anthropic confirmed a major service outage affecting users globally. The issues began on August 16 at 23:58 MSK, impacting the Claude.ai platform, the developer tool Claude Code, and the collaboration service Claude Cowork.

According to Anthropic's status page, authentication difficulties arose first, followed by degraded system performance. The API and management console, however, remained fully operational. Users encountered login failures, interface freezes, and unprocessed requests.

Anthropic responded swiftly, restoring all affected services by 00:40 MSK. While the cause remains undisclosed, the investigation is ongoing. Users are advised to monitor updates on Anthropic's official status page.

Common questions

Which Anthropic services were affected by the outage?: Claude.ai, Claude Code, and Claude Cowork experienced disruptions, while the API and management console remained operational.
How long did the Claude outage last?: The outage began at 23:58 MSK and was fully resolved within approximately 40 minutes.
Has the cause of the Anthropic service outage been identified?: Anthropic has not disclosed the root cause but continues its investigation.

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