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Microsoft 365, Outlook, and Teams outages hit thousands of US users, disrupting AI services

reuters.com [$] — November 12, 2026 at 11:01 PM UTC

Microsoft 365, Outlook, and Teams experienced outages for thousands of US users on Thursday, with the disruption also affecting connectors used by OpenAI's and Anthropic's AI services, according to Downdetector.com. Downdetector reported over 97,000 user incidents for Outlook at 2:07 p.m. ET, more than 38,000 for Microsoft 365, and about 4,500 for Teams. Microsoft said it was "aggressively pursuing all pathways to reduce impact," pausing deployments, redirecting traffic, and restarting affected servers. Microsoft earlier resolved a Teams disruption in North America but later noted the issue could affect Microsoft 365 connectivity in other regions. OpenAI said it was investigating broken Microsoft connectors, while Anthropic identified an upstream provider issue affecting its Microsoft 365 connector.

With a significance score of 1.7, this news ranks in the top 30% of today's 32330 analyzed articles.

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[3.0]

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[2.6]

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[2.5]

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[2.4]

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[2.4]

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[2.4]

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[2.4]

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[2.4]

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[2.3]

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[2.3]

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[2.3]

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[2.3]

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[2.3]

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[2.3]

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[2.3]

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[2.3]

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[2.2]

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[2.2]

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[2.2]

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[2.2]

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[2.2]

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[2.1]

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[2.1]

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[2.1]

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[2.1]

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[2.1]

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7h

[2.1]

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[2.1]

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Microsoft outage hits Outlook and Teams worldwide (srf.ch)

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[2.1]

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5h

[2.0]

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[2.0]

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7h

[2.0]

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9h

[2.0]

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[2.0]

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<1h

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[2.0]

Microsoft Outlook outage hits 74 countries, disrupting Teams and Copilot (ewn.co.za)

<1h

[2.0]

Microsoft Outlook outage hits thousands of users across 74 countries (estrepublicain.fr)

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[2.0]

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<1h

[2.0]

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<1h

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[2.0]

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[2.0]

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2h

[2.0]

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2h

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[2.0]

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[2.0]

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[2.0]

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[2.0]

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[2.0]

Microsoft outage hits Outlook and Copilot, services recovering (ansa.it)

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Microsoft outage disrupts Outlook, Teams, and Microsoft 365 globally (irishtimes.com)

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[2.0]

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[1.8]

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[1.8]

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Microsoft outage disrupts Outlook, Teams, and 365 services globally (news18.com)

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[1.8]

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[1.8]

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Microsoft outage disrupts Outlook and Microsoft 365 globally (ledevoir.com)

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[1.8]

Microsoft outage disrupts Outlook email for users worldwide (thenationalnews.com)

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[1.8]

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Microsoft's recovery efforts fall short as Outlook, Teams, and Copilot outages persist (firstpost.com)

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[1.8]

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[1.8]

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[1.8]

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[1.8]

Microsoft outage disrupts Outlook, Teams, and Copilot for hours worldwide (derwesten.de)

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[1.7]

Microsoft outage disrupts Outlook and Teams for thousands globally (khaleejtimes.com)

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[1.7]

Microsoft Outlook and Teams outage disrupts services in 74 countries (gulfnews.com)

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[1.7]

Microsoft confirms global Outlook outage affecting Microsoft 365 services (cope.es)

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Microsoft outage disrupts Outlook and Teams for thousands across 74 countries, including Singapore (channelnewsasia.com)

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[1.7]

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[1.7]

Microsoft 365, Outlook, and Teams outages hit thousands of US users, disrupting AI services (reuters.com)

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[1.7]

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[1.7]

Microsoft 365 outage disrupts users worldwide (globalnews.ca)

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[1.7]

Microsoft outage disrupts Outlook, Teams, and Copilot for thousands of users (ru.euronews.com)

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[1.7]

Exchange Online: The Microsoft 365 email service behind Outlook outages (qz.com)

8h

[1.7]

Microsoft outage disrupts Outlook and Teams for thousands, including Portugal (sapo.pt)

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[1.7]

Singapore government systems hit by Microsoft outage, emergency services unaffected (channelnewsasia.com)

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[1.6]

Microsoft fixes Outlook outage after global email disruption (thenationalnews.com)

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[1.6]

Microsoft outage disrupts Microsoft 365, Teams, Outlook, and Copilot globally (mashable.com)

10h

[1.6]

Microsoft confirms Outlook outage affecting users worldwide (dallasnews.com)

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[1.6]

Microsoft outage disrupts Outlook, Teams, and 365 services (cbc.ca)

7h

[1.6]

Microsoft 365 outage persists with limited recovery after global disruption (thehindu.com)

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[1.6]

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[1.6]

Microsoft services restored after global outage affecting Outlook and Teams (tg24.sky.it)

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[1.6]

Microsoft Outage Disrupts Outlook and Teams for Thousands of Users (ndtv.com)

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[1.6]

Microsoft outage disrupts Outlook and Teams for thousands of users (nrk.no)

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[1.6]

Microsoft outage disrupts Outlook, Teams and Copilot for thousands (euronews.com)

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[1.6]

Microsoft outage: Are emails sent during the disruption lost? (economictimes.indiatimes.com)

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[1.6]

Toronto hospital network declares 'Code Grey' after Microsoft outage hits email (ctvnews.ca)

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[1.6]

Microsoft outage hits Outlook, Teams, and Copilot in 74 countries (protothema.gr)

2h

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[1.5]

Microsoft Outlook outage persists globally after disrupting email access (gmx.net)

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[1.5]

Microsoft outage disrupts Outlook, Teams, and Copilot for thousands of users (fr.euronews.com)

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[1.5]

Microsoft 365 outage hits Outlook and Teams worldwide (www1.folha.uol.com.br)

6h

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[1.5]

Microsoft confirms Outlook outage affecting Brazil and global users (folhavitoria.com.br)

7h

Link Source (Portuguese)

[1.5]

Microsoft 365 outage disrupts Outlook, Teams, and Copilot for users in India and the US (news18.com)

10h

[1.5]

Microsoft outage disrupts Outlook, Teams, and Microsoft 365 for thousands (reviewjournal.com)

10h

[1.5]

Microsoft outage disrupts Outlook for US office workers (cnn.com)

5h

[1.5]

Microsoft confirms Outlook outage affecting users globally (expansion.com)

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[1.5]

Microsoft Outlook outage disrupts email for over 100,000 users worldwide (rnz.co.nz)

11h

[1.5]

Microsoft investigates Outlook and Teams outages affecting 100,000 users (yle.fi)

7h

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[1.5]

Microsoft outage sparks worker jokes about 'snow day' (usatoday.com)

6h

[1.5]

Microsoft outage disrupts 365, Outlook, Teams for users in US, Canada, Europe (vnexpress.net)

4h

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[1.5]

Microsoft Outlook global outage disrupts email for nearly 130,000 users (timesofindia.indiatimes.com)

7h

[1.5]

Microsoft outage disrupts Outlook, Teams, and Copilot for global users (lefigaro.fr)

7h

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[1.5]

Microsoft outage disrupts Outlook, Teams, and Copilot for global users (aljazeera.com)

8h

[1.5]

Microsoft email outage hits 130,000 users; Outlook still down after server overload (bhaskar.com)

6h

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[1.5]

Microsoft outage disrupts Outlook for thousands globally (thehindu.com)

<1h

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[1.5]

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8h

[1.5]

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7h

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[1.4]

Microsoft outage disrupts Outlook, Teams, and Copilot for 130,000 users (india.com)

2h

[1.4]

Microsoft 365 outage hits North America after Outlook cyberattack series (newsbomb.gr)

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Link Source (Greek)

[1.4]

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1h

[1.4]

Microsoft identifies likely cause of Nov. 12 Outlook outage (sea.mashable.com)

6h

[1.4]

Microsoft outage disrupts Outlook, Teams, and Copilot for users in US and Sweden (svd.se)

7h

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[1.4]

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9h

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[1.4]

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11h

[1.4]

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[1.4]

Microsoft outage disrupts Outlook for over 120,000 users in the Americas (toronto.citynews.ca)

8h

[1.4]

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[1.4]

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9h

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[1.3]

Microsoft outage disrupts Outlook, Teams for users in Americas (business-standard.com)

3h

[1.3]

Microsoft restores Outlook after global outage hits 74 countries (newsbomb.gr)

1h

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[1.3]

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[1.3]

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[1.3]

Microsoft fixes Exchange sign-in issues caused by Windows Server updates (bleepingcomputer.com)

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[1.3]

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[1.3]

Microsoft fixes Outlook and Teams outages after disrupting users in the Americas (abc30.com)

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[1.3]

Microsoft Outlook outage hits thousands of UK and US users (metro.co.uk)

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[1.3]

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[1.2]

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[1.2]

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[1.2]

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[1.2]

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[1.2]

Microsoft resolves Teams issue, investigates Outlook and Exchange Online outage in North America (abc7.com)

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[1.2]

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[1.2]

Microsoft outage disrupts Outlook, Teams, and 365 services for thousands (thehindu.com)

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[1.1]

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4h

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[1.0]

Microsoft 365 outage disrupts Teams, Outlook, Word, and Excel globally (blick.ch)

5h

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[1.0]

Microsoft outage hits Outlook users in Canada and U.S (cp24.com)

11h