Forum help & Moderation

• Off topic and unrelated question
• Question with lack of detail
• Unsupported language in the English AAQ
• Volunteers (and how to submit feedback)
• Duplicate question
• Problem Resolved
• OP solved the issue independently
• Lack of user response
• Create A New Thread
• Create a screenshot
• Premium product redirect
• Mozilla VPN redirect
• Inquiries about donating to the Mozilla Foundation

Hot topics

• Additional language request for the Firefox translation feature
• Firefox desktop - Synced tab groups
• Firefox for Android - Set custom homepage
• Firefox for iOS - Feedback about download management
• Firefox Desktop - Handoff to awesomebar

Common issues (Firefox for Desktop & mobile)

• Firefox built-in VPN
• Website asks to enable JavaScript
• Disable JavaScript
• Disable all AI features in desktop
• Malware (Windows Only)
• Mixed Content
• Choose another PDF reader
• Platform version is not compatible message
• Shield Study Opt in/out Option
• Download Token
• Update mobile app (Android/iOS)
• Import bookmarks on Firefox mobile (refers to Firefox for Android article, but is also applicable for iOS)

Mozilla account and Sync

• Mozilla account contact form
• Configure Firefox Sync on mobile
• Forced Sync after a failed Sync
• Sync not a backup service

Desktop — Common troubleshooting steps

• Start Firefox in Troubleshoot Mode
• Disable hardware acceleration in Firefox
• Get troubleshooting information
• Clean reinstall of Firefox
• Refresh Firefox - reset defaults
• Troubleshooting media issue in Firefox

Desktop — Download, install and update

• Install or update Firefox on different platforms
• Turn off Firefox automatic update
• Websites will not load after Firefox update (uninstall antivirus)
• I found a fake Firefox update

Desktop — Add-ons and themes

• Blocked Add-ons
• Uninstalling an extension
• Switch to previous theme
• Search and homepage issues caused by add-on issues
• Settings for themes
• Confirm default search engine (add-on prompt)

Desktop — Bookmarks, Cache and Cookies

• Lost Bookmarks
• Recover bookmarks and other profile data missing after update
• Remove Other Bookmarks folder from the Bookmarks Toolbar
• Add Bookmarks Menu toolbar icon to show missing bookmark folders

• Clear cache and cookies
• Reload a site bypassing the cache

Desktop — Search

• Changing default search engine
• Add Yahoo Search to Firefox
• Search Hijacker

Desktop — Crashes

• Firefox crashes
• Firefox crashes when you open it (Windows)
• Firefox crashes when you open it (Mac)

Desktop — Website breakage and Printing

• Turn off Enhanced Tracking Protection (ETP) for a website
• Site breakage troubleshooting

• Check print margins

Desktop — Advanced Customization and Configuration

• Open about_config (Firefox Configuration Editor)
• about:config warning
• userChrome.css or userContent.css warning
• Compact density workaround
• Control how Firefox uses multiple desktops on Windows

Firefox for Android — Common troubleshooting steps

• Check version and update Firefox for Android
• Basic Browsing Issues on Firefox for Android
• Firefox for Android crash report
• Firefox for Android homepage customization
• Add ons problems and requests on Firefox for Android
• Feature requests on Firefox for Android
• End of support for Android 5, 6 and 7

Firefox for iOS — Common troubleshooting steps

• Customize Firefox for iOS homepage
• Firefox for iOS add-ons support
• Sponsored content on Firefox for iOS
• Adblock on Firefox for iOS
• Firefox for iOS crash report

Firefox Focus

• Firefox Focus basic browsing
• End of support for Android 5, 6 and 7

Thunderbird

• Clean Reinstall (Thunderbird)
• Troubleshooting Thunderbird using Troubleshoot Mode
• Asking for Troubleshooting Information (Thunderbird)
• Missing email (Thunderbird)