{"id":"INC-anthropic-sqn3fg1l96dl","kind":"incident","aliases":[],"related":[],"title":"Anthropic: Elevated errors affecting the Microsoft 365 connector","description":"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.","summary":null,"severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"Anthropic","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["ai","anthropic","incident","llm","ops","vendor"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-12T17:52:44+00:00","first_seen_at":"2026-11-12T17:54:07+00:00","triaged_at":"2026-11-12T17:54:28+00:00","updated_at":"2026-11-12T18:36:12+00:00","category":"vendor","confidence":null,"triage":null,"analyst_status":null,"analyst_note":null,"search":"'365':7A,32C 'affect':4A,29C 'ai':14B 'anthrop':1A,15B 'anthropic':11A,13A 'calendar':35C 'complet':52C 'connect':46C 'connector':8A,33C,49C 'contact':56C 'elev':2A 'error':3A 'fail':40C 'identifi':22C 'inc':10A 'inc-anthropic-sqn3fg1l96dl':9A 'incid':16B 'issu':24C 'llm':17B 'mail':34C 'may':50C 'microsoft':6A,31C 'new':45C 'op':18B 'possibl':67C 'provid':28C,61C 'request':43C 'search':37C 'soon':65C 'sqn3fg1l96dl':12A 'tool':38C 'updat':63C 'upstream':27C 'vendor':19B","nicknames":[],"mitigations":[],"who_affected":null,"tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":null,"audience":null,"plain_action":null,"pkeys":["anthropic"],"ptokens":["anthropic"],"labels":["ai","anthropic","high","incident","llm","ops","vendor"],"campaign_type":null,"search_a":"'365':7A 'affect':4A 'anthrop':1A 'anthropic':11A,13A 'connector':8A 'elev':2A 'error':3A 'inc':10A 'inc-anthropic-sqn3fg1l96dl':9A 'microsoft':6A 'sqn3fg1l96dl':12A","search_b":"'ai':14B 'anthrop':15B 'incid':16B 'llm':17B 'op':18B 'vendor':19B","search_c":"'365':32C 'affect':29C 'calendar':35C 'complet':52C 'connect':46C 'connector':33C,49C 'contact':56C 'fail':40C 'identifi':22C 'issu':24C 'mail':34C 'may':50C 'microsoft':31C 'new':45C 'possibl':67C 'provid':28C,61C 'request':43C 'search':37C 'soon':65C 'tool':38C 'updat':63C 'upstream':27C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-12T17:52:44+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"statuspage","external_id":"anthropic:sqn3fg1l96dl","url":"https://stspg.io/m0rbx38nmy1c","severity":"high","published_at":"2026-11-12T17:52:44+00:00","modified_at":"2026-11-12T18:34:20+00:00","first_seen_at":"2026-11-12T17:54:07+00:00","fetched_at":"2026-11-12T19:03:38+00:00","note":null}],"documents":[],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}