# Anthropic: Major incident: Elevated errors affecting the Microsoft 365 connector

> Major incident: Elevated errors affecting the Microsoft 365 connector. Detected 2026-11-12 by Rewindex: what changed on Anthropic’s status page, with the before/after diff.

Canonical: https://rewindex.com/change/i389de69e553021
Last updated: 2026-11-12T17:53:37Z

**Summary:** _summary pending_
- Kind: Major incident · Label: major (vendor)
- Changed: 2026-11-12 17:52 UTC · Detected: 2026-11-12 17:53 UTC
- [Source: https://status.claude.com/incidents/sqn3fg1l96dl](https://status.claude.com/incidents/sqn3fg1l96dl)
- [Company: Anthropic](https://rewindex.com/company/anthropic.md)
- Versions: before (none: first archived) → after incident\_version:1/sqn3fg1l96dl@dad99bb89254
- Change 1 of 5 for this incident

Incident page (full timeline): [Elevated errors affecting the Microsoft 365 connector](https://rewindex.com/company/anthropic/incidents/sqn3fg1l96dl.md)
## What changed

**1. Added: Title**

```diff
+ Elevated errors affecting the Microsoft 365 connector
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ investigating
```

**4. Added: Start time**

```diff
+ 2026-11-12 17:52 UTC
```

**5. Added: Affected components**

```diff
+ claude.ai
```

**6. Added: Update** (investigating) · 2026-11-12 17:52 UTC

```diff
+ We are investigating elevated errors and slow responses affecting the Microsoft 365 connector. Requests to mail, SharePoint, Teams chat and calendar through the connector may fail, and new connections to the connector may not complete. We will provide an update as soon as possible.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-11-12 17:52 UTC | Major incident: Elevated errors affecting the Microsoft 365 connector (this change) | major |
| 2026-11-12 18:43 UTC | [Incident updated: Elevated errors affecting the Microsoft 365 connector](https://rewindex.com/change/r6f558485e3f13e.md) |  |
| 2026-11-12 20:33 UTC | [Incident updated: Elevated errors affecting the Microsoft 365 connector](https://rewindex.com/change/r36f4c5e666e19c.md) |  |
| 2026-11-12 21:23 UTC | [Incident updated: Elevated errors affecting the Microsoft 365 connector](https://rewindex.com/change/rb5cd81a6111aab.md) |  |
| 2026-11-12 22:33 UTC | [Incident updated: Elevated errors affecting the Microsoft 365 connector](https://rewindex.com/change/r0bf4e3895c85c4.md) |  |

Next: [change](https://rewindex.com/change/r6f558485e3f13e.md) · All Anthropic changes: [timeline](https://rewindex.com/company/anthropic/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._

## Cite this

Major incident: Elevated errors affecting the Microsoft 365 connector on Anthropic’s status page, changed 2026-11-12 17:52 UTC (change 1 of 5).

- Canonical URL: https://rewindex.com/change/i389de69e553021
- Citation: Anthropic, “Major incident: Elevated errors affecting the Microsoft 365 connector” (2026-11-12 17:52 UTC). Archived by Rewindex: https://rewindex.com/change/i389de69e553021 (CC BY 4.0).
- Markdown link: `[Anthropic: Major incident: Elevated errors affecting the Microsoft 365 connector (2026-11-12)](https://rewindex.com/change/i389de69e553021)`


---
Canonical: https://rewindex.com/change/i389de69e553021 · Markdown: https://rewindex.com/change/i389de69e553021.md · JSON: https://rewindex.com/api/v1/changes/i389de69e553021 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-13T02:18:02.387Z