Microsoft 365 Outage: Recovery Under Way After 18 Hours
Microsoft 365 outage stretched into a second day on Friday, after a failure that began on Thursday knocked out Outlook, Teams and Copilot for users in 74 countries. Microsoft said recovery was under way but gave no date for full restoration.
The disruption went global within an hour, reaching 74 countries and territories, per outage tracker Downdetector. Outlook reports alone peaked at more than 130,000 around 1pm ET on Thursday, while reports about Teams, Copilot, OneDrive and Azure also surged. Services began coming back after nearly 18 hours, but full stability had not yet returned for everyone.
How the Microsoft 365 outage spread
The trouble began on Thursday, November 12, with an advisory about mailbox access problems in the Americas. Within hours it had escalated into a worldwide failure affecting Teams, SharePoint, Copilot and Defender XDR, and it stretched into Friday, November 13.
Microsoft blamed elevated load on a portion of its infrastructure across several regions. The company said it knew of no malicious activity behind the incident, and later updates ruled out a cyberattack.
Microsoft later said the problem was a technical issue not related to cyber or AI, introduced during an earlier network capacity upgrade and brought to the surface by a recent network change. The company apologised and said it was seeing broad recovery across its services.
Recovery under way, but no date for full restoration
By Friday, Microsoft reported broader improvements in North America, sustained improvements across much of Europe, and encouraging signals in Asia-Pacific. Downdetector reports began declining by 9am GMT, and email queues moved closer to normal.
Even so, Microsoft said it had no date for full recovery, and some users may still face intermittent access problems or delayed email delivery.
The fallout around the world
The outage crippled vital public services in several countries. In the UK, trade union GMB warned of a serious impact on the National Health Service, where emergency call handlers could not refer patient details in the normal way, creating a massive backlog, said Rachel Harrison, the union’s public services head.
Immigration New Zealand paused all visa applications until further notice. In India, IndiGo and Akasa Air warned on X that email support was affected.
Japan’s trade and industry minister Ryosei Akazawa said the outage would cause a significant impact. In Australia, the Australian Computer Society chief executive called for a national review of sovereign IT risk.
The failure also rattled the corporate world and exposed heavy reliance on Microsoft’s tools in London’s financial district. Yashmit Sharma, an auditor, said the biggest problem was Copilot not working, which showed how much firms now depend on it. Some businesses fell back on telephones and fax machines.
What it means for users in Pakistan
The outage hit Microsoft 365 worldwide, so users in Pakistan faced the same mailbox and meeting failures as users elsewhere. Outlook and Teams are standard tools in Pakistani offices, banks, universities and government departments.
One failure knocks out so many services because Outlook, Teams and Copilot all depend on one layer, Exchange Online, for mailboxes and calendars. When it fails, email access, meeting schedules and AI help go down together.
The episode follows the first hours of the outage reported on Thursday, when Microsoft was still investigating disruptions to email and Teams. It also underlines a wider point for Pakistani businesses: the country’s cyber threat landscape is already under strain, and reliance on a single cloud provider means one fault can halt work across whole organisations. As 5G use grows in Pakistan and technology stocks swing sharply, the cost of such outages rises, while new messaging features keep rolling out on apps people use daily.
Frequently asked questions
When did the Microsoft 365 outage start?
It began on Thursday, November 12, with mailbox access problems in the Americas. It escalated within hours into a worldwide failure, stretching into Friday, November 13, and lasting nearly 18 hours.
Which services were affected?
Outlook, Teams and Copilot were hit hardest, along with Exchange Online, SharePoint, OneDrive and Azure. Downdetector logged reports from 74 countries, with Outlook reports peaking at more than 130,000.
What caused the outage?
Microsoft blamed elevated load on part of its infrastructure. It later said the problem was a technical issue from an earlier network capacity upgrade, surfaced by a recent network change, and not a cyberattack.
Has Microsoft 365 fully recovered?
Not yet. Microsoft reported improvements in North America, Europe and Asia-Pacific, but gave no date for full restoration, and some users may still see delayed email.
Did the outage affect Pakistan?
The outage hit Microsoft 365 worldwide, so users in Pakistan faced the same mailbox and meeting failures as users elsewhere. Outlook and Teams are standard tools in Pakistani offices, banks and universities.
