Microsoft Teams and Outlook Down? Here’s the Full Story

If your inbox went quiet on Thursday evening and your calendar refused to load, blame Microsoft rather than your Wi-Fi. Microsoft Teams and Outlook went down for users worldwide during a global Microsoft 365 outage, and Microsoft was still nursing its servers back to health on Friday.

Table of Contents:

• Are Teams and Outlook Down?
• Which Microsoft Apps Went Down?
• What Caused the Outage?
• How Much Does Downtime Cost?
• Outlook Down Dos and Don’ts
• Teams and Outlook Recovery Status
• Closing Thought

Are Teams and Outlook Down?

Yes, Microsoft Teams and Outlook went down worldwide in an outage that started on Thursday 12 November 2026 and dragged on into Friday. The trouble began at 5.17pm Central European Time in Exchange Online, the email engine behind business Outlook accounts.

It spread fast. By around 7pm, Downdetector had logged more than 130,000 reports about Outlook, with complaints arriving from 74 countries and territories within the hour. Forbes reported that the disruption hit airlines and government agencies as well as ordinary offices.

For plenty of teams, Friday morning meant a silent inbox and a very busy WhatsApp group.

Which Microsoft Apps Went Down?

Email took the hardest hit, but anything that leans on Exchange Online wobbled too. Here is how the main apps fared, based on Microsoft’s own service updates.

‍

‍

The damage did not stop at Microsoft’s own apps. Microsoft 365 connectors for Claude and ChatGPT also stopped working, so AI assistants lost access to the same inboxes their owners could not open.

What Caused the Outage?

A recent network configuration change is the leading suspect, though Microsoft has not confirmed the root cause yet. The company said a process that sets up secure connections on the affected servers became overwhelmed, so those servers stopped handling requests.

Those servers then failed automated health checks and dropped out of service. Their workload landed on the rest of the infrastructure, which made things worse. Servers that Microsoft restarted fell over again as soon as traffic returned, the IT version of standing up too fast after a long-haul flight.

Microsoft paused all deployments and started rolling back the network change that lined up with the start of the outage. It also said it had found no sign of malicious activity, so this looks like a self-inflicted wound rather than a hack.

This is not the first wobble of the year either. Microsoft 365 had an outage lasting almost ten hours in North America back in January.

How Much Does Downtime Cost?

Downtime costs most businesses far more than they budget for. New Relic’s 2025 Observability Forecast puts the median cost of a high-impact outage at $2 million per hour. Smaller firms see smaller figures, but the pain grows with how much of the day runs through email.

Big bills are common too. In Uptime Institute’s latest outage research, 54% of respondents said their most recent serious outage cost more than $100,000.

The bigger worry is that many firms never do the maths. New Relic found that 34% of UK and Irish businesses either don’t know or don’t track what outages cost them. If you can’t put a number on an hour offline, you can’t judge how much backup is worth having.

Outlook Down Dos and Don’ts

A few small habits make the next Teams or Outlook outage much less painful.

Do:

• Check Microsoft’s service status page before restarting your laptop for the fifth time.
• Keep a backup channel, such as a phone group or a second chat tool, for urgent team updates.
• Store key client contacts somewhere outside your inbox.
• Tell clients early if your replies will be slow.

Don’t:

• Resend the same email ten times, because most messages are delayed and will turn up later.
• Click “fix your mailbox” links in texts or emails, since scammers love a good outage.
• Change admin settings on a hunch while Microsoft is still mid-fix.
• Run every automation through one provider with no fallback.

Teams and Outlook Recovery Status

Microsoft Teams and Outlook were recovering but not fully back at the time of writing on Friday morning, GMT. Microsoft reported early signs of stabilisation, but said services were still below normal levels and gave no time for full recovery.

Admins can follow the incidents in the Microsoft 365 admin centre under EX1550543 and MO1550821. Once Outlook comes back for you, expect a pile of delayed email to land in one go.

Closing Thought

Every business runs on someone else’s servers, and this week proved how quickly that can bite. Malta-based digital agency MPiFY helps businesses build in some resilience, from web hosting and SiteCare plans that keep websites monitored and backed up to AI automation workflows built with a plan B for when one platform goes dark.

“Nobody can stop a cloud giant from having a bad day,” says Keith Debono Borg, Co-Founder and Managing Director of MPiFY. “What you can control is how much of your business stops with it. A backup channel and a simple outage plan take an afternoon to set up, and you will be glad of them the next time your inbox goes quiet.”

Want a setup that keeps working when a big platform stumbles? Talk to the MPiFY team and we will help you find the weak spots before the next outage does.

FAQ

Is Outlook down right now?

Outlook was recovering on Friday 13 November 2026, but service was patchy for some users. Check Microsoft’s service status page for the latest update.

Why is Microsoft Teams not working today?

Teams features that depend on Exchange Online, such as calendars and meeting scheduling, were hit by the same outage. Chat and online meetings mostly kept working.

Was the Microsoft outage a cyber attack?

No evidence points to a cyber attack. Microsoft said it found no sign of malicious activity behind the outage.

Are emails lost during a Microsoft 365 outage?

Most emails are delayed rather than lost. Sending servers usually keep retrying, so messages tend to arrive once service returns.

How do I check Microsoft 365 service status?

Use Microsoft’s public status page or the Service Health section of the Microsoft 365 admin centre. Admins will find the most detail there.

Can businesses get compensation for the outage?

Some business customers can claim service credits under Microsoft’s service level agreement. Your Microsoft account manager or licensing partner can confirm whether you qualify.

Key Takeaways

• Downdetector logged more than 130,000 Outlook reports at the outage’s peak.
• Reports came from 74 countries and territories within an hour.
• Microsoft 365 had an outage lasting almost ten hours in North America in January.
• High-impact outages carry a median cost of $2 million per hour.
• 54% of respondents said their latest serious outage cost more than $100,000.
• 34% of UK and Irish businesses don’t know or don’t track outage costs.

‍