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Anthropic suffered a worldwide service disruption that knocked Claude offline across its web interface and API-dependent services, causing failed prompts, slow responses, interrupted conversations, and widespread 529 Overloaded errors. The incident affected multiple Claude models and began around 19:45 UTC, with Anthropic stating on its status page that it started investigating shortly afterward and had identified the issue by 20:33 UTC.
Elevated error rates continued until about 21:26 UTC, and Anthropic later declared the incident resolved at 22:36 UTC after monitoring recovery across most models. The company did not disclose a root cause or estimated recovery details during the outage, but the error pattern pointed to temporary overload, backend capacity constraints, or related service issues that also disrupted tools and workflows built on the Claude API.
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After monitoring recovery, Anthropic marked the incident resolved at 22:36 UTC. The outage had disrupted both direct Claude usage and dependent API services worldwide.
The period of elevated error rates lasted until 21:26 UTC, after which Anthropic reported recovery across most affected Claude models and services.
By 20:33 UTC, Anthropic reported that it had identified the issue behind the outage and was working on remediation. The company did not disclose the root cause.
Anthropic said it began investigating the incident at 19:49 UTC as users encountered elevated errors across Claude and tools relying on the Claude API.
Anthropic's Claude platform experienced a worldwide disruption that caused failed prompts, slow responses, interrupted conversations, and "529 Overloaded" errors across multiple models, affecting both the web interface and API-dependent services. Elevated error rates began around 19:45 UTC on July 29, 2026.
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Anthropic's Claude platform suffered another service disruption that caused elevated `529 Overloaded` errors and partial outages across **claude.ai**, the **Claude API**, **Claude Code**, and **Claude Cowork**. Anthropic first reported the incident at 05:06 UTC and said it had identified the root cause by 05:27 UTC, but remediation was still in progress past 06:42 UTC with no full recovery confirmed. The disruption affected several major models, including **Claude Mythos 5**, **Claude Fable 5**, **Claude Opus 5**, and **Claude Opus 4.8**, disrupting enterprise and developer access to production AI workflows. Anthropic said **Claude Console** and **Claude for Government** were not affected, while reporting around the incident pointed to a broader pattern of recurring Claude instability and capacity-related service issues during 2026.
Aug 24, 2026
**Anthropic** reported a worldwide outage affecting its **Claude** AI platform, with users experiencing failed requests, timeouts, inconsistent responses, and login errors across web, mobile, and API access. The incident began with an “Investigating” status notice at **11:49 UTC**, followed by an update indicating the issue remained under investigation and no estimated time to resolution was provided. Anthropic later indicated it had identified functional problems impacting **some API methods** and said it was continuing work on a fix. The disruption affected a broad user base rather than a single region or application, resulting in widespread inability to access Claude services during the incident window.
Jun 29, 2026
Anthropic’s **Claude** platform suffered a widespread service disruption that affected users globally across the web app, mobile clients, and **Claude Code**, with reports of elevated errors, long response delays, hung sessions, and failed requests involving models such as `Opus 4.6` and `Sonnet 4.6`. User complaints rose sharply after the incident began around 0600 UTC, and Anthropic’s status page moved from reporting a partial outage to saying a fix had been implemented before later marking systems operational, though some customers continued to report intermittent problems after remediation. Separately, a security researcher disclosed a **critical supply-chain vulnerability** in Anthropic’s official **Claude Code GitHub Actions** workflow that could have allowed an unauthenticated attacker to compromise repositories using it, including Anthropic’s own. The flaw stemmed from write-permission checks that trusted any GitHub actor whose name ended with `[bot]`, enabling a malicious GitHub App bot to bypass restrictions and, when chained with prompt injection, potentially exfiltrate secrets, steal GitHub Actions `OIDC` credentials, obtain a privileged Claude GitHub App token, and push malicious code downstream; Anthropic said it patched the issues in `v1.0.94` with stronger actor validation and additional workflow hardening.
Jun 29, 2026