It’s 9:15 on a Monday. Outlook won’t load, Teams says it can’t connect, and someone in the next office is already restarting their laptop for the third time. Is it your network? Your computer? Or is Microsoft having a bad morning?
Sometimes it really is Microsoft. Microsoft 365 is one of the most reliable cloud platforms around, but it isn’t immune to outages, and when it goes down, millions of businesses go quiet at the same time. Here’s why Microsoft 365 outages happen, how to tell whether the problem is on your end or theirs, and how to keep your business running until service comes back.
When a Botched Update Takes Down Office 365 and Teams
This post originally covered an outage that Microsoft traced back to a faulty software update, one that knocked out Office 365 and Teams for users around the world. It wasn’t the first time a routine change caused a very non-routine morning, and it hasn’t been the last.
The pattern is surprisingly consistent. Microsoft pushes changes to its cloud constantly: security patches, new features, network adjustments. The vast majority roll out without anyone noticing. Occasionally, one contains a mistake that slips past testing, and because Microsoft 365 runs at such a massive scale, a small error can ripple out to millions of users within minutes.
Outages That Followed the Same Pattern
A couple of well-known examples show how a single change can have an outsized impact:
- January 2023: Outlook, Teams, and other Microsoft 365 services went down for users worldwide for several hours. Microsoft traced the cause to a network change, an IP address update to a router in its wide area network, that disrupted connectivity across its services.
- July 2024: A faulty update from security vendor CrowdStrike crashed Windows computers around the globe. It wasn’t Microsoft’s update, but Microsoft estimated that about 8.5 million Windows devices were affected, grounding flights and taking hospitals, banks, and retailers offline.
The takeaway isn’t that the cloud is unreliable. It’s that every business depends on software it doesn’t control, and that’s worth planning for.
Is Microsoft 365 Down, or Is It Just You?
Before anyone starts restarting routers, figure out where the problem actually is:
- Check Microsoft’s public status page. Microsoft posts widespread incidents on its Microsoft 365 service status page.
- Check Service health in the admin center. If you’re a Microsoft 365 admin, the Service health dashboard shows incidents affecting your organization specifically, often with more detail than the public page. Microsoft explains how in its guide to checking Microsoft 365 service health.
- Try a different route in. If the Outlook app won’t connect, try Outlook on the web from a browser or your phone. If one works and the other doesn’t, the problem is probably on your device or network, not Microsoft’s side.
- Ask a coworker. If only one person is affected, it’s almost certainly a local issue. If the whole office is down, check your internet connection next.
- Call your IT provider. A good helpdesk will often know about a major outage before you do, and can tell you whether to wait it out or start troubleshooting.
How to Keep Your Business Running During a Microsoft 365 Outage
You can’t stop Microsoft from having a bad day. You can make sure your business doesn’t grind to a halt when it does.
- Have a backup way to communicate. If Teams and Outlook are both down, how does your team reach each other? Agree on a fallback ahead of time, like a group text, phone tree, or a second messaging tool, and make sure everyone knows it.
- Keep key files available offline. OneDrive’s sync settings let you keep important folders on your device, so your team can keep working on documents while cloud access is spotty.
- Know your customer message. If clients can’t reach you by email, a quick post on your website or social media, or an updated phone greeting, keeps them from assuming you’ve gone dark.
- Back up your Microsoft 365 data. Microsoft keeps the service running, but recovering deleted or corrupted email and files is largely your responsibility. A separate cloud backup means an outage or a mistake doesn’t turn into lost data.
- Write it down. A short business continuity plan that covers outages, who decides what, and how you’ll communicate turns a chaotic morning into a checklist. Ready.gov’s business preparedness resources are a helpful starting point.
- Don’t rush the restart. During major outages, scammers often send fake “Microsoft support” emails and phone calls offering fixes. Get updates from Microsoft’s status page or your IT provider, not from an unexpected message.
Most Microsoft 365 outages are resolved within hours. The businesses that come through them best aren’t the ones that never lose service. They’re the ones that already decided what to do when it happens.
LG Networks Can Help You Ride Out the Next Outage
When Microsoft 365 goes down, the worst part is usually the uncertainty. Is it just us? How long will it last? What should we do in the meantime? Having an IT partner who already knows the answers turns a stressful morning into a minor inconvenience.
LG Networks provides managed IT services in Dallas, TX, and across DFW, including Microsoft 365 administration, 24/7 IT support and monitoring, cloud backups, and business continuity planning. We keep an eye on service health so you don’t have to, tell your team what’s happening when something breaks, and help you build a plan before you need one.
If Outlook and Teams went down tomorrow morning, would your team know what to do?
Take the first step. We’ve got you covered.
Want a plan for the next outage before it happens? Contact Us Today.
