Outlook stopped working for a lot of offices on Thursday, November 12. Microsoft 365 had a widespread outage centered on Exchange Online email in the Americas, with Teams and Copilot also affected. If your office in Fort Myers, Naples or anywhere else couldn’t send or receive email, the cause was at Microsoft and had nothing to do with your equipment.
Key takeaways
- Exchange Online (Outlook email) was hit hardest. Teams and Copilot also had problems.
- US Outlook reports on Downdetector passed 130,000 (Euronews).
- Microsoft said part of its infrastructure was under higher than normal load. No full root cause has been published yet.
- Delayed mail is usually queued and retried, so most of it should arrive late rather than not at all.
What happened?
Microsoft posted that users were “experiencing issues accessing Exchange Online mailboxes through multiple connection methods in the Americas” and said the problem could affect people “in any region” (KPRC/AP). It paused deployment and configuration changes and redistributed Outlook traffic after finding servers that were becoming intermittently unavailable (Yahoo News). A separate Teams issue in North America that started in the morning was resolved around noon Eastern. News reports later in the day said service was coming back for most people.
It’s the second large Microsoft 365 outage of 2026. The first, on January 22, lasted close to ten hours (The Register).
What should I do right now?
- Check your Outbox and Sent Items and resend anything that didn’t go out.
- Confirm time-sensitive messages arrived with whoever was waiting on them.
- If Outlook won’t reconnect, restart it or try outlook.office.com in a browser.
- Hold off on rebuilding profiles or resetting passwords during an outage. Those don’t fix a Microsoft-side problem.
- Watch for phishing. Fake “sign in to restore your mailbox” emails tend to follow big outages. Microsoft doesn’t send those.
How should a Florida office plan for the next outage?
Most businesses here already have a hurricane plan: who to call, where to work from, what can wait. A cloud outage needs the same short list. Pick a backup way to reach your staff and best clients (text or phone). Know where Microsoft posts status: the Service health page in the Microsoft 365 admin center and the Microsoft 365 Status account on X. And back up your Microsoft 365 data with a separate tool, since Microsoft keeps the service running but doesn’t promise point-in-time recovery of your own files and mail.
Frequently asked questions
Was the November 12 Microsoft outage a cyberattack?
Microsoft hasn’t said so. Its explanation so far is infrastructure under higher than normal load.
Did I lose email sent to me during the outage?
Probably not. Sending servers retry for a while, so most messages arrive late. If something is still missing tomorrow, ask the sender to resend it.
How can I tell if it’s Microsoft or my own network?
Check Service health in the Microsoft 365 admin center or the Microsoft 365 Status account on X. If there’s an active incident listed, it’s on Microsoft’s side.
Need a backup plan for the next one?
SWFIT can help you put together a simple outage plan and set up Microsoft 365 backup. Email us at hello@swfit.io.
