Troubleshooting
- Crash signature - nsEventListenerManager Release
- Crash signature - nsGlobalWindow cycleCollection UnmarkPurple nsISupports
- Crash signature - NSSRWLock_LockRead_Util
- Crash signature - nsStyleSet AddImportantRules
- Crash signature - nsStyleSet FileRules
- Crash signature - nsWindow GetParentWindow
- Crash signature - PL_DHashTableOperate
- Crash signature - _PR_MD_SEND
- Crash signature - RaiseException
- Crash signature - RtlFreeHeap
- Crash signature - RtlpCoalesceFreeBlocks or RtlAllocateHeap
- Crash signature - RtlpWaitForCriticalSection
- Crash signature - RtlpWaitOnCriticalSection
- Crash when closing a Gmail tab
- Custom installation of Thunderbird on Windows
- Customize Date and Time formats in Thunderbird
- Data Removal Pilot -How do I change my personal information?
- Dedicated profile per Thunderbird installation
- Deleting the DigiNotar CA cert
- Deleting the DigiNotar CA certificate
- Deleting the DigiNotar CA cert TB
- Deleting Your Pocket account
- Diagnose Firefox issues using Troubleshoot Mode
- Difficulties opening or using a website in Firefox 100
- Difficulties opening or using a website in Firefox Focus for Android 100
- Difficulties with a website in Firefox Focus for Android 100
- Difficulties with a website in Firefox Klar for Android 100
- Disable Firefox Sync on a lost phone or tablet
- Disable high contrast mode in Firefox
- Display name in message list and message pane
- Display the Thunderbird menus and toolbar
- Do I need to install the apps I get in the Adaptive App search results?
- Do I need to install the apps I get in the dynamic search results?
- Downloads window does not open
- Downloads window is blank
- Drag and Drop errors with Firefox Launcher Process enabled and Windows UAC disabled - How to Fix
- Enable Block Promotional Emails in Firefox Relay Premium
- Enable or disable Local Network Access on iOS
- Enable SSL to fix the Firefox cannot connect securely error message
- End of support for Firefox Lite
- End of support for Firefox Lockwise
- End of support for Firefox Private Network
- End of support for Firefox Reality
- End of support for Mozilla Hubs
- Entry point js_SaveRegExpStatics could not be located
- Error code 500 accessing secure sites
- Error loading web sites
- Error opening Internet shortcut or local HTML file
- Exporting your Pocket saves
- Facebook Container isn't working
- Facebook import error on ZTE Open
- Facebook import errors on ZTE Open
- Facebook import errors on ZTE Open Redirect 1
- Favicons do not display
- File system paths on Linux are always treated as UTF-8
- Firefox 18 crashes on startup due to malware - how to fix
- Firefox 24 crashes with the Norton Toolbar
- Firefox 3.6 is no longer supported
- Firefox 3 upgrade switches bookmarks and other settings to older version
- Firefox 43.0.3 startup crash with G DATA security software
- Firefox advanced customization and configuration options
- Firefox and other browsers can't load websites
- Firefox asks for user name and password on internal sites
- Firefox blocked by macOS 15 Sequoia firewall - What you need to know
- Firefox blocked by macOS 15 Sequoia firewall: What you need to know
- Firefox cache file was infected with a virus
- Firefox cannot connect securely because the site uses an older insecure version of the SSL protocol
- Firefox cannot connect securely because the SSL protocol is disabled
- Firefox cannot load websites but other programs can
- Firefox can't be installed on a Mac - how to fix it
- Firefox can't be opened after you install it on a Mac - How to fix
- Firefox can't be opened after you install it on a Mac - How to fix Redirect 1
- Firefox can't be opened on a Mac - how to fix it
- Firefox can't be opened on Mac - how to fix it
- Firefox can't load websites but other browsers can
- Firefox consumes a lot of CPU resources
- Firefox crashes
- Firefox crashes at startup after Symantec (Norton) update
- Firefox crashes due to Adware-DoubleD
- Firefox crashes due to AVG SafeSearch
- Firefox crashes due to old Google Desktop versions
- Firefox crashes on startup for users of Comodo security products after July 2017 Windows 10 update
- Firefox crashes - Troubleshoot, prevent and get help fixing crashes
- Firefox crashes when downloaded files are checked by virus scan
- Firefox crashes when loading certain pages
- Firefox crashes when trying to download a file
- Firefox crashes when using Yahoo Mail
- Firefox crashes when viewing page source
- Firefox crashes when viewing Youtube videos
- Firefox crashes when working with PDF files
- Firefox crashes when you exit it
- Firefox crashes when you open it
- Firefox crash issue - 595957
- Firefox crash issue - 595957 Redirect 1
- Firefox displays files as text
- Firefox does not ask to save tabs and windows on exit
- Firefox does not work
- Firefox does not work - Common fixes to get you back up and running
- Firefox doesn't save web form entries
- Firefox exe is always running