Duo outages and problems
We haven't logged a single user report for Duo in the past 24 hours, and its uptime over that window is 100.00%.
No 15-minute window had any reports at all, so the chart above stays flat.
What Duo's status page says
Checking status.duo.com…
Duo problem spikes, last 30 days
Since 5 October, Duo had no outage spikes or periods of elevated reports.
A spike is a sharp rise in problem reports from users in Switzerland, kept exactly as this page showed it at the time. This history starts on 5 October 2026, when our archive began. Monthly reports for all services
How to fix Duo not working
Duo is up on our end, so if it won't work for you, the problem is most likely on your side. Work through these in order:
Check Duo Mobile and your device time
If Duo is not working today on iPhone or Android, open Duo Mobile, install pending updates, and set Date and Time to automatic; an incorrect clock can block approval codes. If you searched is Duo down or is Duo down right now, compare the app result with operational and 0 reports.
Test push approvals and backup sign-in
Try a passcode or hardware token if push approvals fail, then check your administrator's policy before re-enrolling the device. Duo server status and Duo down detector results can differ from your account's condition, so check is Duo working from another browser or device.
Check your network and DNS
Switch from Wi-Fi to mobile data, or restart the router, if Duo requests time out. For a wider problem, review Duo network status and search Duo outage today 2026, then check 100.00% and more than 24 hours ago; a local DNS failure can affect sign-in while the service stays operational.
Fix Duo on Windows, Mac, Android and iPhone
Duo on Windows
- Fix
- Clear your browser cache and cookies, or try a different web browser to resolve Duo authentication prompt issues on Windows. You should also verify that your Windows system time is synchronized, as time drift can prevent Duo from working.
- Check
- Check the official Duo Security status page to see if there is an active outage. You can also try loading the Duo login portal in an incognito window to see if the authentication prompt fails to load.
ping duo.comTest whether Duo's servers replynslookup duo.comCheck that Duo's DNS resolvestracert duo.comTrace where the connection dropsipconfig /flushdnsClear the DNS cache, then reloadDuo on Mac
- Fix
- Ensure your macOS browser is updated to the latest version and temporarily disable any security extensions that might block the Duo prompt. Also, check that your Mac's date and time settings are set to update automatically.
- Check
- Try authenticating through a different browser on your Mac or check the Duo status dashboard. If the Duo authentication screen remains blank or times out, the service is likely experiencing issues.
ping -c 4 duo.comTest whether Duo's servers replynslookup duo.comCheck that Duo's DNS resolvestraceroute duo.comTrace where the connection dropssudo dscacheutil -flushcache; sudo killall -HUP mDNSResponderFlush the macOS DNS cache, then reloadDuo on Android
- Fix
- Force stop the Duo Mobile app in your Android settings, clear its app cache, and make sure your device's time is set to automatic. You can also check the Google Play Store to ensure you have the latest version of Duo Mobile installed.
- Check
- Open the Duo Mobile app and attempt to generate a passcode manually. If the app displays connection errors or fails to receive push notifications while your internet is working, Duo might be down.
Duo on iPhone and iPad
- Fix
- Verify that notifications are enabled for Duo Mobile in your iOS settings, or try restarting your iPhone. If the app continues to malfunction, reinstall Duo Mobile from the App Store.
- Check
- Check if you can receive a Duo push notification or if the Duo Mobile app fails to open entirely. If your network connection is stable but the app cannot connect to the server, Duo is likely experiencing an outage.
What happens when Duo goes down
Duo handles multi factor sign ins, so a service problem can block access even when the rest of your connection works. If you are asking, "is Duo down right now," the live page shows operational and 100.00% uptime over the past 24 hours. We also track 0 recent reports, which helps separate a wider incident from a local login problem.
When Duo goes down, push approvals may stall and protected apps may reject a valid sign in. Searches for "is Duo down," "Duo not working today," "Duo outage today 2026," and "Duo down detector" often appear during a spike in failed prompts. A short outage can look like a bad phone connection, so check another login method before changing account settings.
Duo FAQ
Is Duo down right now?
What is the Duo server status?
Why is Duo not working today?
How do I check if Duo is down?
How we track Duo
The status on this page comes from user-submitted problem reports for Duo, counted in 15-minute windows over the last 24 hours. Each window is compared with the normal level for Duo, so a few complaints on a quiet day don't trigger anything, but a sudden jump well above normal does.
When reports climb well above normal, the status here changes to partial outage or major outage and the chart moves with it. Duo doesn't publish a public status page that we know of, so user reports are often the quickest sign that something is wrong on their side.