If your Outlook inbox refused to load this morning, you are in very large company. Microsoft is fighting a global Microsoft 365 outage that began on Thursday, November 12, 2026, and is still disrupting Outlook, Teams, Copilot and other services on Friday, November 13. At its peak, outage tracker Downdetector recorded nearly 130,000 problem reports for Outlook alone, with users affected across 74 countries, including India. Here is what is actually happening, and what you should do right now.
Is Outlook down right now?
Yes, for many users around the world. Microsoft's own service health page confirms ongoing service degradation for Microsoft 365 business and enterprise services, and for consumer products including Outlook.com. In updates on Friday morning, Microsoft said it was seeing partial recovery in some regions, but that its actions were "not resulting in sustained recovery" and earlier fixes were "not taking as expected." As of Friday afternoon in India, the company had not announced a confirmed restoration time. The picture may change through the day, so treat Microsoft's service health page as the live source.
Which Microsoft services are affected?
Exchange Online is at the centre. Users may be unable to reach their mailboxes through Outlook on the web, the Outlook desktop app, mobile sync or REST-based connections, and email delivery can be delayed. Microsoft tracks this under incident EX1550543, with the wider Microsoft 365 disruption under MO1550821. Teams messaging and meetings mostly work, but calendar, scheduling and some chat creation can fail. Copilot may not load or respond, especially features that read mail, calendars and files. Parts of SharePoint Online, Planner, To Do, Defender Safe Links, Power BI, Intune and Purview that depend on Exchange Online are also hit, while files stored directly in SharePoint remain accessible. Even OpenAI and Anthropic reported problems with their Microsoft 365 connectors.
Why is Outlook down? What caused the outage?
Microsoft says the elevated load was not driven by a rise in traffic, but by a large number of servers being unexpectedly unavailable, which shifted load onto the remaining infrastructure. Its investigation points to servers failing automated health checks: a process responsible for establishing secure connections becomes overwhelmed, causing the servers to stop processing requests. Microsoft says the issue was confined to the network gateway for Microsoft 365 services, and it is reviewing recent configuration changes as a possible contributor. In plain terms, a fault inside Microsoft's own infrastructure knocked a large pool of servers out of rotation, and the rest buckled under the shifted load.
Is the Microsoft outage a cyber attack?
Microsoft says no. It has stated repeatedly that there is no indication of malicious activity behind this outage. Big outages always attract rumours, so it is worth saying clearly: every official statement so far points to an internal infrastructure failure, not an attack.
When will Outlook be back?
There is no confirmed timeline yet. Recovery steps so far include pausing deployments, restarting affected servers, shifting traffic to alternate routes, failing workloads over to other network gateways and scaling up capacity. Some restored servers became unresponsive again once traffic returned, which is why recovery has been uneven across regions. One reassurance from Microsoft: queued email is expected to be delivered, though delayed, so missing messages should arrive rather than vanish.
What to do while Outlook is down
A practical checklist for your team:
1. Check the source, not the rumours. Use Microsoft's service health page; business admins should open Service Health in the Microsoft 365 admin centre and quote incident IDs EX1550543 and MO1550821 when raising support tickets.
2. Try another connection method. Impact varies by region and method, and some users report the mobile app or web version working when the desktop app does not.
3. Do not reinstall Outlook, recreate mail profiles or reset passwords. The fault is on Microsoft's side; these steps only create local cleanup work later.
4. Move urgent communication to a backup channel: phone, WhatsApp or an alternate mailbox.
5. Watch for the MFA trap. Some users cannot sign in to unrelated services because their verification codes go to an Outlook inbox they cannot open. Use backup codes or an authenticator app where you can.
6. Save work locally, and expect delayed mail to arrive in a batch once recovery completes.
The bigger lesson for businesses
One internal fault at one provider paused work email across 74 countries. For Indian businesses, where the workday was just getting going as the outage peaked on Friday morning, it is a sharp reminder of concentration risk: when your email, meetings, files and AI assistant all live in one cloud, one bad day upstream becomes your bad day. A sensible continuity plan does not need to be elaborate: a documented fallback communication channel, offline access habits for critical files, backup sign-in methods, and an IT partner who watches service health before your staff floods the helpdesk.
If this outage has exposed gaps in how your business handles email and collaboration downtime, VAIR IT can help you build a practical resilience plan. We offer a free consultation for businesses in Delhi NCR and across India.
