Site breakages
Resolve problems when websites don’t load or function correctly.
Troubleshoot time-related errors on secure websites
Learn why you might see time-related errors on HTTPS websites and how you can troubleshoot these errors by correcting your system clock.
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Fix error “Website will not allow Firefox to display the page.”
Learn why Firefox may block a page embedded by another site, and what you can do to open it.
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Troubleshoot security error codes on secure websites
Learn what Firefox security error codes mean and how to resolve them safely, including antivirus, network and certificate issues.
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Websites don't load - troubleshoot and fix error messages
Are you having trouble getting a website to load? This article will show you how to fix the problem so you can get back to surfing the web.
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Resist Fingerprinting
Firefox's Advanced Preferences to resist fingerprinting can help prevent websites from uniquely identifying your device but can cause problems. Learn more.
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Configure firewalls so that Firefox can access the Internet
A firewall controls what programs can access the Internet. Find information about configuring your firewall to allow Firefox access to the Internet.
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How do I report a broken site in Firefox desktop?
How to report a broken website and what information Mozilla receives when you report breakage caused by Enhanced Tracking Protection.
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Fix login issues on websites that require a username and password
If you find that you can't log in to a website that requires a username and password, follow the steps described in this article.
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Firefox and other browsers can't load websites
If no web browsers on your computer can load websites, it indicates a problem with your Internet connection. The article describes some troubleshooting methods.
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Fix problems connecting to websites after updating Firefox
Learn to troubleshoot and fix problems connecting to websites that start immediately after updating to a new version of Firefox.
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Websites look wrong or appear differently than they should
This article explains how to fix problems with websites that display incorrectly in Firefox or don't work the way they should.
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Some videos won't play in background
Some popular video websites have changed their settings on the server side so that videos will no longer play in the background.
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The language of the websites I visit changes when I turn Mozilla VPN on - What to do
This article explains what to do if the language of the websites you visit changes when you use Mozilla VPN
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Websites show a spinning wheel and never finish loading
Sometimes a website will start to load, but never finish. This article covers possible solutions.
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Firefox can't load websites but other browsers can
We'll explain errors such as "Server not found" or "Unable to connect" and how to fix problems where Firefox can't access websites but other browsers can.
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Fix problems with Facebook games, chat and more
This article describes how to troubleshoot problems, like those with games or chat, that you might encounter while using Facebook in Firefox.
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Websites say that Firefox is outdated or incompatible even though it's the latest version
Some websites that need a specific browser or version make a mistake detecting your installed version of Firefox. We'll explain how to fix or work around this.
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TLS Error Reports
Firefox TLS Error Reports; what they are and why you might want to share yours.
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Web pages aren't displaying properly in Firefox for Android
Websites coded for specific layout engines may cause compatibility issues in some browsers. Here's a workaround you can try on Firefox.
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Troubleshoot issues related to add-ons
Add-ons can cause issues in Firefox. This article provides more information on how you can troubleshoot Firefox issues related to add-ons.
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Firefox for iOS won't load web pages
If a website isn’t loading even after you’ve checked the Internet connection, here are a few things you can try.
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Difficulties opening or using a website in Firefox 100
A potential temporary solution if a web page is not opening correctly in Firefox 100.
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Difficulties opening or using a website in Firefox Focus for Android 100
A potential temporary solution if a web page is not opening correctly in Firefox Focus for Android 100.
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Problems with email and how to find help
Find out the right direction to get help using webmail in Firefox and links to support pages for popular web-based email services.
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