---
id: "INC-anthropic-sqn3fg1l96dl"
page: "https://infrastack.ai/live/INC-anthropic-sqn3fg1l96dl"
kind: "incident"
aliases: []
title: "Anthropic: Elevated errors affecting the Microsoft 365 connector"
severity: "high"
cvss: null
epss: null
exploited: false
status: "open"
category: "vendor"
products: [{"name": "Anthropic", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["ai", "anthropic", "incident", "llm", "ops", "vendor"]
not_affected_if: []
published_at: "2026-11-12T17:52:44+00:00"
first_seen_at: "2026-11-12T17:54:07+00:00"
updated_at: "2026-11-12T18:36:12+00:00"
sources: [{"source": "statuspage", "url": "https://stspg.io/m0rbx38nmy1c", "first_seen_at": "2026-11-12T17:54:07+00:00"}]
exploit_sources: []
---

# Anthropic: Elevated errors affecting the Microsoft 365 connector

Link for people: https://infrastack.ai/live/INC-anthropic-sqn3fg1l96dl (this .md is for agents)

## Affected

- vendor:Anthropic affected range not listed fixed no fixed version listed

## Timeline

- 2026-11-12T17:54:07+00:00 statuspage https://stspg.io/m0rbx38nmy1c

## From the sources

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.

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