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Common Myths about Private Browsing
Learn more about common misconceptions about Private Browsing in Firefox.
Secure connection failed and Firefox did not connect
If a website requires a secure connection that cannot be established, Firefox will not connect and will show you an error page. Learn more.
Permission request messages for Firefox extensions
Learn about permission requests when adding extensions to Firefox. Get details on each request for a clearer understanding.
Add-on Badges
You’ll know if an extension is being regularly reviewed if it has one of the badges listed in this article.
Enhanced Tracking Protection in Firefox for desktop
Enhanced Tracking Protection in Firefox automatically protects your privacy while you browse.
Understanding the risks of installing self-hosted extensions
Learn about the risks of installing extensions from third-parties and how to assess the trustworthiness of the source.
Introducing Total Cookie Protection in Standard Mode
Firefox users now have access to Total Cookie Protection by default. Find all you need to know about it in this article.
Make Firefox your default browser on Windows
Learn how to make Firefox your default Web browser on Windows 10 and Windows 11.
Firefox Page Info window
The Firefox “Page Info” window gives you details about the page you're on. You can also use it to change permissions for the website.
Windows 10 warns me to use a "Microsoft-verified" app
Windows 10 may interrupt your Firefox install with a warning about "Microsoft-verified apps". Firefox is safe to install and use, so choose "install anyway".
Avoid and report Mozilla tech support scams
Mozilla does not provide telephone support and does not charge for software downloads, upgrades or technical help. Learn more.
Use tabs to organize lots of websites in a single window
By displaying a website in a tab, Firefox lets you have multiple websites open inside a single window. Learn the basics of using tabs.
Firefox options, preferences and settings
Settings panels give you access to Firefox settings. This article describes what types of settings are available in each panel.
Sponsored shortcuts on the New Tab page
Working with its advertising partners, Mozilla may place sponsored shortcuts on the default Firefox home page and New Tab page. Learn more.
Private Browsing on Firefox for Android
Private Browsing on your mobile device is great for viewing websites incognito - without saving information about the sites you visit.
Captive portal detection
Description of how Firefox detects captive portal networks.
Third-party trackers
Learn about cross-site (third-party) cookies that collect information to track your browsing, which are used on many websites.
Cookies - Information that websites store on your computer
Learn what "cookies" are, how websites use them, and how you can manage the cookies that Firefox stores.
Website will not allow Firefox to display the page if another site has embedded it
This page explains the error: "Website will not allow Firefox to display the page if another site has embedded it"
Password Manager - Remember, delete and edit logins and passwords in Firefox
Firefox's password management feature securely stores your usernames and passwords. Learn how to save, view, manage and protect your logins.