# Anthropic: Incident updated: Elevated errors affecting the Microsoft 365 connector

> Incident updated: 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/r6f558485e3f13e
Last updated: 2026-11-12T18:43:37Z

**Summary:** _summary pending_
- Kind: Incident update · Label: not classified yet
- Changed: 2026-11-12 18:43 UTC · Detected: 2026-11-12 18:43 UTC
- [Source: https://status.claude.com/incidents/sqn3fg1l96dl](https://status.claude.com/incidents/sqn3fg1l96dl)
- [Company: Anthropic](https://rewindex.com/company/anthropic.md)
- Versions: before incident\_version:1/sqn3fg1l96dl@dad99bb89254 → after incident\_version:1/sqn3fg1l96dl@bd0b4073103f
- Change 2 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. Changed: Status**

```diff
- investigating
+ identified
```

**2. Added: Affected components**

```diff
+ Claude Cowork
```

**3. Added: Update** (identified) · 2026-11-12 18:34 UTC

```diff
+ We have identified an issue with an upstream provider affecting the Microsoft 365 connector. Mail, calendar and search tools are failing for most requests, and new connections to the connector may not complete. We are in contact with them and 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](https://rewindex.com/change/i389de69e553021.md) | major |
| 2026-11-12 18:43 UTC | Incident updated: Elevated errors affecting the Microsoft 365 connector (this change) |  |
| 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) |  |

Previous: [change](https://rewindex.com/change/i389de69e553021.md) · Next: [change](https://rewindex.com/change/r36f4c5e666e19c.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

Incident updated: Elevated errors affecting the Microsoft 365 connector on Anthropic’s status page, changed 2026-11-12 18:43 UTC (change 2 of 5).

- Canonical URL: https://rewindex.com/change/r6f558485e3f13e
- Citation: Anthropic, “Incident updated: Elevated errors affecting the Microsoft 365 connector” (2026-11-12 18:43 UTC). Archived by Rewindex: https://rewindex.com/change/r6f558485e3f13e (CC BY 4.0).
- Markdown link: `[Anthropic: Incident updated: Elevated errors affecting the Microsoft 365 connector (2026-11-12)](https://rewindex.com/change/r6f558485e3f13e)`


---
Canonical: https://rewindex.com/change/r6f558485e3f13e · Markdown: https://rewindex.com/change/r6f558485e3f13e.md · JSON: https://rewindex.com/api/v1/changes/r6f558485e3f13e · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-13T02:17:48.236Z