# Claude: Major incident: Elevated errors across many models

**Summary:** Claude reported a major incident affecting claude.ai, Claude API (api.anthropic.com), Claude Code and Claude Cowork: some users had login issues, including via oAuth, and model request errors. It started at 2026-08-04 20:48 UTC and was resolved at 2026-08-04 21:59 UTC, lasting 1 h 11 min; success rates had recovered by 21:04 UTC. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2026-08-04 20:48 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/j5npxk25yrp3](https://stspg.io/j5npxk25yrp3)
- [Company: Claude](https://rewindex.com/company/claude.md)
- Versions: before (none: first archived) → after incident\_version:6/bdr3fq2rkchr@f3df47775dec
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Elevated errors across many models
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-08-04 20:48 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-08-04 21:59 UTC
```

**6. Added: Affected components**

```diff
+ claude.ai, Claude API (api.anthropic.com), Claude Code, Claude Cowork
```

**7. Added: Update** (investigating) · 2026-08-04 20:48 UTC

```diff
+ We are currently investigating this issue.
```

**8. Added: Update** (investigating) · 2026-08-04 21:04 UTC

```diff
+ We have identified an issue which resulted in some users experiencing issues when attempting to log into Anthropic services, including Claude.ai and Claude Code via oAuth. Additionally, some users saw errors when making requests to models. At this time, we have seen success rates recover and are monitoring closely to ensure there are no further issues.
```

**9. Added: Update** (resolved) · 2026-08-04 21:59 UTC

```diff
+ This issue has been resolved.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-08-04 20:48 UTC | Major incident: Elevated errors across many models (this change) | outage |

All Claude changes: [timeline](https://rewindex.com/company/claude/changes.md)
_Diff excerpts are shown on normalized text: dates, counters and tokens appear as ‹date›, ‹count›, ‹tok›; noise-only edits are hidden. Rewindex shows the changed passages, not a copy of the page._


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Canonical: https://rewindex.com/change/i08175f31d2aba8 · Markdown: https://rewindex.com/change/i08175f31d2aba8.md · JSON: https://rewindex.com/api/v1/changes/i08175f31d2aba8 · Generated 2026-10-18T02:54:46.562Z