Microsoft stock slumps on outage that includes the Copilot tool it has been heavily promoting
What happened
A major Microsoft 365 outage on Thursday cut off Outlook, Teams and the Copilot AI assistant for users worldwide, and Microsoft said it was still working to restore full service.
Downdetector counted disruptions in 74 countries and territories, with the problem spreading globally within about an hour.
Around 130,000 U.S. users reported Outlook problems shortly after 1 pm Eastern Time, according to Downdetector.
By 6 pm Eastern Time, about 37,000 users still reported trouble, and Microsoft said it was seeing only limited recovery.
Microsoft blamed elevated load on its infrastructure and said servers had gone offline rather than traffic having surged.
The company paused all deployments, moved traffic off the affected systems and restarted servers; Wired reported no sign of a cyberattack.
Exchange Online, SharePoint Online and Defender XDR were also listed among the affected services.
Summary written by AI from 3 independent sources (Wired, Bangkok Post, The Hindu) and checked automatically against them for copied text and numbers that are not in the sources. How we work
Open on the live globe →Who reported it
- 2026-11-12 20:01 UTCWired · wired.com ↗
- 2026-11-13 02:45 UTCBangkok Post · bangkokpost.com ↗
- 2026-11-13 06:18 UTCIraqi News via AFP · iraqinews.com ↗
- 2026-11-13 10:53 UTCFrance 24 · france24.com ↗
- 2026-11-13 10:53 UTCAfricanews · africanews.com ↗
- 2026-11-13 10:55 UTCCBC · cbc.ca ↗
- 2026-11-13 11:18 UTCAl Jazeera · aljazeera.com ↗
- 2026-11-13 11:42 UTCCNA · channelnewsasia.com ↗
- 2026-11-13 11:43 UTCBBC · bbc.co.uk ↗
- 2026-11-13 11:52 UTCVariety · variety.com ↗
- 2026-11-13 12:14 UTCMarketWatch · marketwatch.com ↗
- 2026-11-13 12:48 UTCThe Verge · theverge.com ↗
- 2026-11-13 12:58 UTCGlobal News · globalnews.ca ↗
- 2026-11-13 13:11 UTCCNBC · cnbc.com ↗
- 2026-11-13 13:15 UTCTechCrunch · techcrunch.com ↗
- 2026-11-13 14:56 UTCGuardian · theguardian.com ↗
- 2026-11-13 15:26 UTCArs Technica · arstechnica.com ↗
- 2026-11-13 15:31 UTCThe Hindu · thehindu.com ↗
- 2026-11-13 16:03 UTCPortugal News · theportugalnews.com ↗
- 2026-11-13 16:35 UTCEngadget · engadget.com ↗
- 2026-11-13 17:09 UTCMercoPress · en.mercopress.com ↗
- 2026-11-13 18:43 UTCSCMP via AFP · scmp.com ↗
- 2026-11-14 00:26 UTCJapan Times · japantimes.co.jp ↗
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