Performance and connectivity Deal with error messages, crashing applications, connectivity issues, and slow performance. ஆங்கிலத்தில் How to troubleshoot time related errors on secure websites Website will not allow Firefox to display the page if another site has embedded it Captive portal detection Connection settings in Firefox How to troubleshoot security error codes on secure websites Mozilla Crash Reporter TB Diagnose Firefox issues using Troubleshoot Mode What do the security warning codes mean? Troubleshoot and diagnose Firefox problems Firefox can't load websites but other browsers can Rebuilding the Global Database DNS over HTTPS (DoH) FAQs How do I report a broken site in Firefox desktop? Troubleshoot Mode Thunderbird Resist Fingerprinting How to let Firefox use the internet on your Windows computer Use the Troubleshooting Information page to help fix Firefox issues Multi-Hop - Encrypt your data twice for enhanced security while using Mozilla VPN How to reset the default user agent on Firefox Firefox DNS over HTTPS Mozilla VPN won’t connect or keeps disconnecting - How to fix How can I tell if Mozilla VPN is connected? Certificate contains the same serial number as another certificate Where to go for developer support Firefox blocked by macOS 15 Sequoia firewall - What you need to know Websites look wrong or appear differently than they should Server Not Found - Troubleshoot connection problems Task Manager - see whether tabs or extensions are slowing down Firefox Disable Firefox Sync How to enable Always-on VPN on Android Compacting folders - Potential complications HTTPS-First upgrades to secure connections Rate your Firefox experience, surveys and out of date messages (Heartbeat) Certificate warnings in Firefox for iOS What is the Mozilla VPN kill switch? Connecting to unsecured networks while using Mozilla VPN Solutions for "Can not create temp folder archive" error when installing Firefox (Windows 10) Thunderbird makes unrequested connections Some videos won't play in background Drag and Drop errors with Firefox Launcher Process enabled and Windows UAC disabled - How to Fix Report Site Issues on Firefox for iOS Joining public WiFi while on Mozilla VPN Identify problems caused by third-party modules in Firefox for Windows Troubleshooting speed issues on Mozilla VPN The language of the websites I visit changes when I turn Mozilla VPN on - What to do Difficulties opening or using a website in Firefox Focus for Android 100 X-Mouse Button Control in Firefox 110 Rebuilding Global Database How to resolve weak crypto error messages on Firefox 64-bit Firefox crashes with Citrix's XenApp VM How to obtain the Mozilla VPN Logs How to send a crash report on Firefox for Android Profiling Thunderbird Performance Firefox for iOS won't load web pages How to fix an error when trying to open Telegram or Slack on Firefox Fritz!box isn't working when Mozilla VPN is on Exclude applications from Mozilla VPN protection Difficulties opening or using a website in Firefox 100 Search your browsing history in Firefox for iOS Why do I see a white screen after updating Mozilla VPN to version 2.8.3? Firefox hangs when copying with Suggested Actions enabled on Windows 11 - What to do How to find the Pocket app crash logs on iOS Retrieve a Pocket crash log on Android RCS messaging and Mozilla VPN Address screen sharing issues with Firefox on macOS 15 Sequoia Bug 1931078 Troubleshoot Firefox crashes (closing or quitting unexpectedly) Firefox is stuck in Troubleshoot Mode Firefox repeatedly opens empty tabs or windows after you click on a link Fix video and audio problems on Firefox for Windows N editions Avoid crashes - Tips and tricks Firefox keeps crashing at startup Problems with email and how to find help Home page with pipe character opens extra tabs when Firefox starts How to run Firefox when your profile is missing or inaccessible