Live Mozilla status. See if Mozilla is down, view recent outages, and get real-time alerts when problems start.
Mozilla is operational
IsDown pulls data from Mozilla's status page every few minutes and collects user-reported issues. Refresh the page to see if there are any updates.
This chart displays the number of user-reported issues over the past 24 hours, grouped into 20-minute intervals. It's normal to see occasional reports, which may be due to individual user issues rather than a broader problem. We only consider an issue widespread if there are multiple reports within a short timeframe.
IsDown has tracked 32 incidents since started monitoring Mozilla status in June 2021. We collect data from 4400+ services, and normalize the data to give you a clear picture of the impact of the outage.
over 5 years ago · lasted about 2 years
We are currently investigating issues related to one of our data centers (MDC1) being unreachable from the internet. This may impact Mozilla websites and build/test services.
over 6 years ago · lasted over 3 years
Please note we are currently experiencing an issue with the following: Mercurial repos. Service and Impact: Trees are closed, no one can push new code and tests can't run Start Date/Time: 00:00 UTC 12/24/2018 Bug: 1516201 Engaged teams: MOC, Devel...
over 6 years ago · lasted over 3 years
Please note we are currently experiencing an issue with the following: Some nubis hosted website are unreachable Service and Impact: iot.mozilla.org, tlscanary.mozilla.org, planet.mozilla.org,krakenbenchmark.mozilla.org Engaged teams: Moc, Nubis...
We've tracked and collected 32 incidents since started monitoring Mozilla status
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MT
Can't open any of my everyday sites with Firefox today 5/31/25 since about 11:00 am (east coast)
Eloise
Firefos will not start up
Joanne
My email is so slow to download. Problem started yesterday. So frustrating when I need to complete forms
Judith
Browser will not start even after a re-install
Richard
Whenever I click on the app, just a spinning circle for a few seconds then nothing happens.
Lore
It absolutely will not even let me load it this evening
Stephen
Unab;e to open the website which provides the access to most all of my other programmes.
JOSEPH
CANNOT OPEN FIREFOX TO GET ON MY INTERNET PAGE. CAN YOU PLEASE HELP.
richard
When I click on the icon, nothing happens.
Tim
Firefox does not load when called for in my task bar
Gary
Trying to login to booking.com and can't. Keeps going back to the first stage of sign in. Username and password are correct and I've been using it no problem until today. I can open it in google no problem.
juile
accounts.firefox.com won't load
lyn
can't send or receive emails
jamin
browser cannot load webopages; internet available and other browsers function correctly
John
All of a sudden, I'm getting a banner that says 'the certificate for my pop.xxxxxxx.com isn't valid' and 'Someone could be trying to impersonate the server.'
Brandon
SEC_ERROR_EXPIRED_ISSUER_CERTIFICATE on every single site.
Erica
It won't stop disconnecting and it is very unstable.
Janet
can't get into any of my games
celeste
Can't log into any site because of security risk
susiwe
crashing for 10 hrs everytime i try to open link in new tab
Michael
Shows extensions are not working: restarting or disabling them at all does not solve the issue
Austin
Was having issues with things loading in the firefox browser, so I uninstalled to reinstall and now I can't even get to Mozilla's website to download.
P
Keeps saying my tabs have crashed.
Andy
Bowser won't work. Can search anything
gordon
Fails to accept Leeds Building Society user name at login. Simply hangs with "Please wait"
Deb
Customized icons on homepage/new tab not loading at all. When I open a new tab, it appears to be there but I can't click it to access it. The opening homepage tab does access the internet - one time only, and then freezes. This has been happening for the past 36 hours. I've shutdown and reloade...
Paul
Firefox has crashed several times in the past 36 hours. It is currently running but extremely slowly. There have been no updates to the computer in question during this period.
Connie
Just did an update and now nothing works
Jinseo
Cannot access accounts.firefox.com
john
repetitive and frequent crashing
Kashif
Unable to load any pages on firefox on Mac; Safari and Chrome are working ok. This started yesterday.
B
No sites are loading on PC or on mobile
Harrison
Every time I open the browser, I get the message that the tab has crashed.
John
Using certain programmes it freezes and then firefox asks for feedback and apologises
Peter
Firefox cannot access the internet
Bri
The WidevineCdm plugin has crashed
David
My tabs are crashing regardless the site I try to go on. My connection is good and other browser are functional. I get error message, that my panel is down and if I want to report it.
Peter
I am unable to open various websites on my Firefox browser. Now using Edge, no problems there. Checkes internet, wifi, no issues. Just seems to be Firefox browser issue.
william
trying to use Firefox to access the Screwfix website - keeps coming up with Error 403?
Oliver
can´t load youtube and some other sites.
Sheila
Can't load some websites today
Pat
When i go to open Firefox i get an error message error platform version 130.0 is not compatible with min version<> = 129.0.2
Judy
Facebook doesn't work properly on Firefox. Works fine on I.E./Edge
User
Tabs are running very slow and continuously not responding message is received.
Jack
Every time I train search something it says work site cannot be reached and not just for my PC on two different phones as well
ahmed
NOT ABLE TO SIGN IN TO MY ACCOUNT
Lukas
Firefox takes ages to load any page but Chrome is absolutely fine.
Gabriel
im connected to the eithernet but it seems that firefox is running off a AOL Floppy internet connection
David
Every location connection fails ... "Server unavailble "
Krystian
Firefox Sync down - error 502.
Ronaldo
Mozilla's Firefox seems to be down. Anything and everything I try to search for leads to a "site not found" error. I was using Firefox with no problems and nothing different from usual when it happened, so I don't see how it could be a client-side problem too.
Luiza
Mozilla is constantly crashing, even after restarting pc, restarting the browser or turning off all addons its still crashing. And im unable to log off from my account, it just doesnt react.
Carlos
Twice in a day I have gotten an unresponsive window with tabs open. In both cases using private windows. It have had to use Edge as en emergent solution.
Lee
can not load pages and extremely slow, times out as well
Sharrie
It won't open at all. Just opens to a blank screen.
Be the First to Know When Vendors Go Down
IsDown aggregates official status pages and provides alerts when outages are detected
Services commonly monitored together with Mozilla
Mozilla isn't down. You can check Mozilla status and incident details on the top of the page. IsDown continuously monitors Mozilla official status page every few minutes. In the last 24 hours, there were 0 outages reported.
Mozilla is currently operational. You can check Mozilla status and incident details on the top of the page. The status is updated in almost real-time, and you can see the latest outages and issues affecting customers.
No, there is no ongoing official outage. Check on the top of the page if there are any reported problems by other users.
Currently there's no report of Mozilla being slow. Check on the top of the page if there are any reported problems by other users.
IsDown monitors the Mozilla official status page every few minutes. We also get reports from users like you. If there are enough reports about an outage, we'll show it on the top of the page.
Mozilla last outage was on March 14, 2017 with the title "Incident: air.m.o Video on Demand is not allowing playback of recorded meetings"
Because IsDown is a status page aggregator, which means that we aggregate the status of multiple cloud services. You can monitor Mozilla and all the services that impact your business. Get a dashboard with the health of all services and status updates. Set up notifications via Slack, Datadog, PagerDuty, and more, when a service you monitor has issues or when maintenances are scheduled.
IsDown and DownDetector help users determine if a service is having problems. The big difference is that IsDown is a status page aggregator. IsDown monitors a service's official status page to give our customers a more reliable source of information. The integration allows us to provide more details about the outage, like incident title, description, updates, and the parts of the affected service. Additionally, users can create internal status pages and set up notifications for all their third-party services.
IsDown offers an easy way to monitor Mozilla with maximum flexibility
IsDown monitors Mozilla for major outages. A major outage is when Mozilla experiences a critical issue that severely affects one or more services/regions. When Mozilla marks an incident as a major outage, IsDown updates its internal status, the customer status page and dashboard. Depending on the customer settings, IsDown will also send notifications.
IsDown monitors Mozilla status page for minor outages. A minor outage is when Mozilla experiences a small issue affecting a small percentage of its customer's applications. An example is the performance degradation of an application. When a minor outage occurs, IsDown updates its internal status and shares that information on the customer status page. Depending on the customer settings, IsDown will also send notifications.
IsDown collects all information from the outages published in Mozilla status page to provide the most accurate information. If available, we gather the title, description, time of the outage, status, and outage updates. Another important piece of information is the affected services/regions which we use to filter the notifications that impact your business.
Mozilla publishes scheduled maintenance events on their status page. IsDown collects all the information for each event and creates a feed that people can follow to ensure they are not surprised by unexpected downtime or problems. We also send the feed in our weekly report, alerting the next maintenances that will take place.
IsDown monitors Mozilla and all their 28 components that can be affected by an outage. IsDown allows you to filter the notifications and status page alerts based on the components you care about. For example, you can choose which components or regions affect your business and filter out all other outages. This way you avoid alert fatigue in your team.
Mozilla and other vendors don’t always report outages on time. Our crowdsourced status platform helps you stay ahead of outages. Users report issues and outages, sharing details on what problems they are facing. We use that info to provide early signs of outages. This way, even without an official update, you can stay ahead of possible problems.
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