Microsoft 365 outage hits Outlook, Teams and Copilot across dozens of countries
A prolonged global outage disrupted core Microsoft 365 services including Outlook, Teams, and Copilot, hitting businesses, government bodies, and schools across dozens of countries before services began gradually recovering.
A widespread Microsoft outage crippled key workplace tools including Outlook, Microsoft Teams, Copilot, SharePoint, and OneDrive, dragging on for more than 15 hours and spilling across at least 74 countries. The disruption began around midday Thursday as Exchange Online connectivity failed, knocking out workplace inboxes and communication channels for government departments, schools, courts, and corporate offices across the Americas, Europe, and the Asia-Pacific region.[2][4][6][19][25][26][29]
Microsoft ruled out malicious activity and cyberattacks as the cause of the disruption. The company attributed the breakdown to elevated infrastructure load, automated check failures, and overwhelmed servers responsible for establishing secure connections, which stopped handling incoming requests. Initial remediation efforts struggled as recovered servers became unresponsive once traffic resumed, prompting engineers to roll back network configuration changes and deploy stability patches across affected server clusters.[1][2][10][12][14][17][23][27][30]
The failure generated broad ripple effects beyond standard office software, disrupting Microsoft 365 connectors relied upon by AI platforms such as OpenAI's ChatGPT and Anthropic's Claude. It also forced financial market traders onto telephone lines and prompted agencies like the Australian Federal Police to grapple with service blackouts. Amid the prolonged downtime, Microsoft stock fell roughly 3% in premarket trading. To prevent message losses while backlogs cleared, Microsoft extended its email timeout window to 48 hours as services gradually restored.[4][7][9][13][15][18][20][22][28][31]
Key facts
- The Microsoft 365 outage hit Outlook, Teams, Copilot, SharePoint, and OneDrive, lasting more than 15 hours and affecting users in at least 74 countries.
- Microsoft ruled out a cyberattack or malicious activity, attributing the failure to elevated infrastructure load and overwhelmed servers handling secure connection handshakes.
- Automated check failures led multiple servers to go unexpectedly offline, leaving remaining infrastructure overwhelmed as returned servers struggled under incoming traffic.
- The incident disrupted third-party integrations, including Microsoft 365 connectors used by OpenAI's ChatGPT and Anthropic's Claude.
- Outage reports for Outlook peaked between 130,000 and 140,000, disrupting banks, courts, government agencies, and market trading operations globally.
- Microsoft temporarily extended its email timeout window to 48 hours to preserve delayed messages as recovery efforts progressed.
- Microsoft shares dropped roughly 3% in premarket trading on Friday following the prolonged disruptions to its core software and Copilot service.
Sources · 24 sources
- WS
Wall St Engine@wallstenginePost on X ·
MICROSOFT SAYS ELEVATED INFRASTRUCTURE LOAD ACROSS MULTIPLE REGIONS IS THE LIKELY CAUSE OF $MSFT 365 OUTAGE AFFECTING OUTLOOK, TEAMS AND COPILOT
Open source - FN
Fox News@FoxNewsPost on X ·
BREAKING: Microsoft services are beginning to come back online after a massive global outage left millions of users without access for nearly 18 hours. The disruption affected businesses, schools and government agencies in at least 74 countries, including the United States. Major services impacted included Outlook email, Microsoft Teams and Copilot. Microsoft says the outage was not caused by a cyberattack but by overwhelmed servers responsible for establishing secure connections, preventing them from processing requests. Download the FOX News app for the latest details: https://t.co/BAyV31y5kz
Open source - IN
Inc42@Inc42Post on X ·
. @microsoft365 Outage Disrupts Outlook, Teams Globally For Over 10 Hours. 👇 A widespread Microsoft 365 outage disrupted Outlook, Teams and several other services globally, leaving thousands of users unable to access emails, work files and productivity tools. Downdetector recorded over 38,000 reports of Microsoft 365 issues worldwide, while outages also affected users in India. Microsoft attributed the disruption to multiple servers unexpectedly going offline, putting additional pressure on the remaining infrastructure. The outage also affected OpenAI and Anthropic's Microsoft 365 connectors, highlighting the ripple effects of disruptions across interconnected cloud services. 🔗 Read more about the Microsoft 365 outage and its impact on businesses here: https://t.co/r8QOlmz7W0 #Microsoft #Microsoft365 #CloudComputing #Outage #News
Open source - CB
Coin Bureau@coinbureauPost on X ·
⚠️ALERT: A GLOBAL Microsoft outage has knocked out Outlook, Teams and Copilot across 74 countries, hitting software used by 450 MILLION work accounts. It has dragged on for more than 5 hours, and Microsoft has not confirmed the cause. At the centre of it is something most of us never think about, but rely on every day. Exchange Online, the system that delivers Outlook email for businesses, began failing around midday Eastern time on Thursday. By 1:25 PM, problem reports had jumped from fewer than 15 a minute to 19,650. Outlook reports alone ran 2,000 times above normal. A US state government and two hospital systems in Michigan lost access to email. It even reached ChatGPT and Claude, whose makers said their Microsoft connections were affected. Reports spiked for Amazon’s AWS too, until Amazon said it was “operating normally” and called the outage reports “inaccurate.” Microsoft says a number of its servers became “unexpectedly unavailable.” It paused all deployments and began restarting them. Hours later, it said its fixes “have not provided the anticipated relief.” Even Defender, the platform companies rely on to detect cyberattacks, is caught in the outage. Earlier the same day, Teams had already gone down for over an hour in North America. Microsoft has not said whether the two are linked, and it has not pointed to an attack. Reports have eased from a peak near 130,000 to about 37,000 as some servers return, but Microsoft has not declared it fixed or said how many customers were cut off.
Open source - BA
Barron's@barronsonlinePost on X ·
Nvidia stock rose, Microsoft fell amid a global office outage, and more movers. https://t.co/YLn7uDK3aq
Open source - CN
CBS News@CBSNewsPost on X ·
From Asia to the U.S., a Microsoft outage involving services like Outlook and Teams has dragged on for hours and impacted many users, companies and some government operations. Microsoft said early Friday that the outage was affecting a wide range of Microsoft 365 offerings that interact with its Exchange Online and email services. Services including Outlook, Teams and AI assistant Copilot were reported by users to be down. Read more: https://t.co/Ly41Fkzjjr
Open source - BT
Bull Theory@BullTheoryioPost on X ·
BREAKING: Microsoft's Outlook, Teams and Copilot have been down for over 15 hours. Microsoft says it's not a cyberattack, but servers going down unexpectedly. $MSFT is down -3% in premarket. https://t.co/o4xpAG8e2F
Open source - MA
MarketWatch@MarketWatchPost on X ·
Microsoft stock is dropping amid continued outage of key services: live updates https://t.co/JFA0uwhX4p
Open source - RE
Reuters@ReutersPost on X ·
Australia's spy agency, federal police hit by Microsoft outage https://t.co/wjhVLt44n5
Open source - MN
Mario Nawfal@MarioNawfalPost on X ·
Microsoft says the Outlook and Teams outage is only partially fixed, with recovery repeatedly delayed. The company has restarted servers and rerouted traffic, restoring service in some regions. But servers are still getting overwhelmed as traffic returns, preventing a stable recovery. Microsoft is reviewing further steps to stabilize its infrastructure as users continue reporting connection errors. A recovery that keeps failing is still an outage for everyone waiting on emails and meetings. Source: Digital Trends / Writer: Lucas
Open source - MA
MarketWatch@MarketWatchPost on X ·
Microsoft stock slumps on outage that includes the Copilot tool it has been heavily promoting https://t.co/IT4XKvkaWK
Open source - MA
Mashable@mashablePost on X ·
When will the global Microsoft outage be over? The outlook isn't good. "The servers we returned to service can become unresponsive again once they receive traffic," Microsoft wrote in its most recent update. https://t.co/INK5Gz3hl0
Open source - RE
Reuters@ReutersPost on X ·
Microsoft 365, Outlook, Teams and other apps of the company remained disrupted for thousands of users for more than five hours on Thursday, with the outage also hitting connectors used by OpenAI's and Anthropic's AI services https://t.co/tYUgleOIzu
Open source - TH
The Hindu@the_hinduPost on X ·
Microsoft said that a portion of its infrastructure was “experiencing elevated load” — which it said was “likely contributing to the connectivity errors”; it determined a number of servers were “unexpectedly unavailable” due to a problem that caused them to fail during automated checks. #MicrosoftOutlookDown https://t.co/AkvM8xMTqw
Open source - BA
Barron's@barronsonlinePost on X ·
Microsoft stock fell ahead of the open Friday as a global office outage hits users across the world. https://t.co/Lc1qkqjL2x
Open source - TH
The Hindu@the_hinduPost on X ·
A widespread global outage disrupted Microsoft platforms, including Outlook, Teams, Copilot, and other Microsoft 365 services—affecting individuals, businesses, and government institutions worldwide. At its peak, nearly 1.3 lakh users reported issues accessing Outlook, while Microsoft extended its email timeout window to 48 hours as recovery efforts continue. https://t.co/fMDgNpNSIB
Open source - SE
SecurityWeek@SecurityWeekPost on X ·
Microsoft 365 Outage Update - A process that establishes secure connections was becoming overwhelmed, causing affected servers to stop handling requests. Microsoft began rolling back a recent network configuration change that coincided with the start of the disruption and was monitoring whether the rollback helped. https://t.co/GTFowzCSR9
Open source - MN
Mario Nawfal@MarioNawfalPost on X ·
🚨 Claude AI is experiencing a major OUTAGE as Microsoft's global tech meltdown enters its second day. More than 3,800 users reported problems with Claude... Meanwhile, Microsoft's outage has disrupted Outlook, Teams, and other services used by businesses, schools, hospitals, and even police departments. Are you guys experiencing these issues? Source: Reuters / Writer: Samuel
Open source - CO
Cointelegraph@CointelegraphPost on X ·
🚨 UPDATE: Microsoft outage surpasses 12 hours, disrupting banks, governments and courts across 74 countries. https://t.co/7aLHDVtCar
Open source - PR
ProtosArticle ·
Microsoft extends email timeout by 48 hours amid major outage The ongoing Microsoft outage impacting Outlook, Teams, and its AI assistant Copilot has led to the $3.88 trillion tech giant extending an email “timeout” by 48 hours. Microsoft’s outage began yesterday and has rendered these services, and more, incapacitated for its 430 million Microsoft users. By extending the timeout, Microsoft hopes to allow any emails that have been delayed by the issue to catch up as systems slowly restore. We’re opening all available pathways to restore service, as our actions taken thus far have not provided the anticipated relief. We found a core process on affected servers is becoming overwhelmed, causing capacity loss. To validate a potential recovery, we're isolating a portion… — Microsoft 365 Status (@MSFT365Status) November 12, 2026 One of Microsoft’s first statements on the matter. Read more: LIVE: Jensen Huang resigns from Nvidia after affairs with spy, employee Microsoft reportedly attributed the outage to an “elevated load” within its infrastructure and claims there’s no evidence of “malicious activity.” The company’s latest update said , “We’re seeing continued recovery progress across affected regions, with broader improvements in North America, sustained improvements across much of Europe, and encouraging recovery signals in Asia Pacific.” “Some users may still experience intermittent issues as recovery actions continue. We’re focused on recovery for the remaining affected environments while prioritizing email queue and backlog reduction.” Bad week for tech The outage arrived at the end of a turbulent week for the tech industry after Nvidia’s former CEO Jensen Huang resigned from the company following a series of exposed extramarital affairs. Nvidia’s stock has fallen 15% in the last 5 days and appears to have had a negative impact on the wider financial markets, including Bitcoin, which fell to $68,000 over the last few hours. Outages have also plagued Japanese credit unions and UK and Australian banks over the last few weeks. These were also not attributed to any malicious activity, such as the cyberattacks targeting European supermarket fridges. Got a tip? Send us an email securely via Protos Leaks . For more informed news and investigations, follow us on X , Bluesky , and Google News , or subscribe to our YouTube channel. The post Microsoft extends email timeout by 48 hours amid major outage appeared first on Protos .
Open source - MN
Mario Nawfal@MarioNawfalPost on X ·
🚨 A MASSIVE wave of internet outages is hitting some of the world's biggest tech platforms. And it goes WAY beyond Microsoft. Downdetector is showing spikes in problem reports across Outlook, Microsoft 365, Teams, Azure, Gmail, AWS, Cloudflare, Zoom, Steam, X, Facebook and dozens of other services. Nearly 130,000 reports for Outlook alone at one point. Microsoft has confirmed widespread problems and says it's restarting affected servers and redirecting traffic to restore services. But reports are also appearing across platforms operated by Google, Amazon and other major providers. It's not yet clear whether these disruptions share a common cause or whether some are unrelated. For millions of users, a surprisingly large chunk of the internet has suddenly become unreliable. Writer: Oliver https://t.co/IZ0Oo6a7PX
Open source - CT
Coin TelegraphArticle ·
Microsoft 365 outage hits Outlook email and Teams calendars worldwide Microsoft began a wider patch rollout Friday as the outage disrupted government email and Microsoft 365 connectors in ChatGPT and Claude.
Open source - HE
Hedgeye@HedgeyePost on X ·
Microsoft, $MSFT, says it found no evidence the outage was caused by "malicious" activity.
Open source - MN
Mario Nawfal@MarioNawfalPost on X ·
🇺🇸 Microsoft says there are NO SIGNS OF A CYBERATTACK behind a massive global outage that has disrupted its services for more than 10 hours. Outlook, Teams, Microsoft 365, Copilot, and SharePoint have all been affected, with around 140,000 outage reports for Outlook alone at the peak. Businesses, schools, and government operations across dozens of countries have faced disruptions, leaving workers unable to access emails, meetings, and essential systems. Microsoft says large numbers of servers unexpectedly became unavailable, overwhelming those still operating. Engineers have struggled to restore services, with some fixes providing only temporary relief. With cyberattacks hitting supermarkets in Europe and Western countries bracing for further disruptions, the vulnerability of a world dependent on a handful of technology giants has never been more alarming. Source: Reuters, Rerum Novarum on Telegram / Writer: Mhedi
Open source - TI
The Indian Express@IndianExpressPost on X ·
A global outage affecting Microsoft services, including Teams, Outlook and its AI assistant Copilot, has disrupted access for users worldwide. The company is working to restore its services, but said its recovery efforts were “not going as expected”. The disruption has affected several Microsoft 365 applications, including Word, Excel, PowerPoint, SharePoint and OneDrive. 🔗 https://t.co/weGhbHfWlo
Open source - CN
CNN@CNNPost on X ·
A Microsoft outage that began over 12 hours ago has left millions around the world without access to Outlook email, Teams meeting tools and other staples of modern office life. Banks, governments and courts in multiple countries are affected. Here is what we know so far: https://t.co/TZOZm7bzq7
Open source - CB
Crypto Banter@crypto_banterPost on X ·
🚨MICROSOFT RULES OUT CYBER ATTACK IN GLOBAL OUTAGE! @Microsoft said there is no indication the widespread disruption to Outlook, Teams, and other Microsoft 365 services was caused by malicious or cyber activity. The company is seeing encouraging recovery progress, with service availability and email delivery performance improving across a growing portion of affected infrastructure. Teams are reviewing what happened to prevent similar issues going forward, though some users may still experience intermittent problems.
Open source - DE
Decrypt@DecryptMediaPost on X ·
UPDATE: Microsoft Sees "Early Stabilization" in Outage, Extends Email Timeout to 48 Hours. Microsoft said at 4:24 AM EST it is seeing early stabilization and capacity improvements, and it extended the email timeout to 48 hours to help preserve delayed mail. https://t.co/xjpDCdMzSv
Open source - CN
CNBC@CNBCPost on X ·
Microsoft suffered a widespread outage on Thursday and Friday, as engineers scrambled to fix server issues that caused disruption to millions of its customers around the world. Connectivity issues began shortly before 1 p.m. ET on Thursday and continued into Friday, with Outlook and Teams, along with multiple Microsoft 365 services such as Sharepoint and Copilot, affected. External services that connect with Outlook features such as Calendar were also hit. Read more: https://t.co/UrNCnfUYr2
Open source - ET
Economic Times@EconomicTimesPost on X ·
Microsoft says this outage was not a cyberattack, but the fix is still stuck | As a global outage continued to disrupt Microsoft's services, including Outlook, Teams and Copilot, the company's executive vice-president Charles Lamanna on Friday ruled out malicious or cyber activity as the cause. Efforts to restore normal operations faced fresh hurdles. 📑 FULL STORY ➠ https://t.co/5Ww4v32SPv #Technology #Microsoft #Outage #Cybersecurity #Business
Open source - TS
The Straits Times@straits_timesPost on X ·
Microsoft outage gums up markets, forces traders to use phones https://t.co/glrPWE5doI
Open source