Error Box With Firefox

... Firefox Basic browsing Install and update Sync and save Chat and share Do more with apps Protect your privacy Manage preferences and add-ons Fix slowness, crashing, error messages and other problems Fix problems with websites (Facebook, mozila error 03213210x508 YouTube, webmail etc.) Unblock Firefox from connecting to the Internet Procedures to diagnose and fix problems problems with firefox not responding Videos, sound, pictures and animations don't work Firefox is slow or stops working Firefox crashes Firefox won't save settings or remember information Problems with firefox unable to connect add-ons, plugins or unwanted software Fix slowness, crashing, error messages and other problems Error messages: what they mean and how to fix How to troubleshoot error messages on Firefox What does "Your connection is not secure" mean? When connecting

Error Code: Sec_error_unknown_issuer

to a website that uses an invalid TLS certificate or weak encryption, Firefox will display an error page saying "Your connection is not secure". How to troubleshoot the error code "SEC_ERROR_UNKNOWN_ISSUER" on secure websites This article explains why you might see the error code "SEC_ERROR_UNKNOWN_ISSUER" on HTTPS websites and how you can troubleshoot it. Troubleshoot the "Secure Connection Failed" error message If Firefox can't access a secure (https) site you'll get a "Secure Connection Failed" page. Learn the reasons this firefox your connection is not secure happens and what to do. How to troubleshoot time related errors on secure websites This article explains why you might see time-related errors on HTTPS websites and how you can troubleshoot them by correcting your system clock. Warning Unresponsive script - What it means and how to fix it This article describes the reasons for this error message and covers possible solutions and workarounds. What do the SSLv3 error messages mean on Firefox? When accessing a site with SSLv3, Firefox will block it and display an "Unable to connect securely" message. "This Connection is Untrusted" error message appears - What to do This article explains what this error message means and how to bypass the warning in Firefox if you need to. Fix "The bookmarks and history system will not be functional" error message This article explains what to do if you see the error message "The bookmarks and history system will not be functional" when you start Firefox. "Firefox is already running but is not responding" error message - How to fix it How to start Firefox if you see an error message, "Firefox is already running, but is not responding" or, on Mac OS X, "A copy of Firefox is already open". How to allow Java on trusted sites Learn how to activate Java in Firefox, if necessary, and where to find info about Java prompts and "Application Blocked by Security Settings" error m

load Firefox Editing Tools Article Discussion Edit Article Translate Article Show Translations What Links Here Show History Customize this article Firefox Version 51 Version 50 Version 49 Version 48 Version 47 Version firefox secure connection failed 46 Version 45 Version 44 Version 43 Version 42 Version 41 Version 40 Version 39

Mozilla Firefox Your Connection Is Not Secure

Version 38 Windows 8 Windows 7/Vista Windows XP Mac Linux Windows 10 Explore more topics Basic browsing Install and update Sync and

Firefox Won't Open

save Chat and share Do more with apps Protect your privacy Manage preferences and add-ons Fix slowness, crashing, error messages and other problems Was this article helpful? Websites don't load - troubleshoot and fix error messages Are https://support.mozilla.org/en-US/products/firefox/fix-problems/error-messages you having trouble getting a website to load? Don't worry — we're here to help. This article will show you how to fix the problem so you can get back to surfing the web. Note: If you see the shield icon in the address bar and you're having trouble with that website, please see Mixed content blocking in Firefox Table of Contents1 First, let's figure out where the problem is2 The problem only happens with https://support.mozilla.org/en-US/kb/websites-dont-load-troubleshoot-and-fix-errors certain websites2.1 Try clearing Firefox's cookies and cache2.2 The website loads but doesn't work properly2.3 The problem only happens on a secure (https) website3 The problem only happens in Firefox4 The problem happens in all web browsers5 Other, less common problems First, let's figure out where the problem is With a little detective work, we can narrow down the cause of the problem. Open a new tab and check to see if you can load another website like google.com or mozilla.org. If you can open another site, skip down to The problem only happens with certain websites If you can't open another site, continue on to the next step. Launch another browser, like Internet ExplorerSafariGoogle Chrome, and try to open the site you were having problems with. If the site works in another browser, see The problem only happens in Firefox If the site doesn't work in another browser, check out The problem happens in all web browsers The problem only happens with certain websites If you see any of these error messages, it might just be a problem with Firefox's cache: The connection was interrupted The connection was reset The connection has timed out Try clearing Firefox's cookies and cache Do these steps and then reload the website you're having trouble with. At the top of the Firefox window, click

is Untrusted" error ... Firefox Editing Tools Article Discussion Edit Article Translate Article Show Translations https://support.mozilla.org/en-US/kb/connection-untrusted-error-message What Links Here Show History Customize this article Firefox Version 51 Version 50 Version 49 Version 48 Version 47 Version 46 Version 45 Version 44 Version 43 Version 42 Version 41 Version 40 Version 39 Version 38 Windows 8 Windows 7/Vista Windows XP Mac Linux Windows 10 Explore more topics Basic browsing Install and update Sync with firefox and save Chat and share Do more with apps Protect your privacy Manage preferences and add-ons Fix slowness, crashing, error messages and other problems Was this article helpful? "This Connection is Untrusted" error message appears - What to do This article describes why the This Connection Is Untrusted error message may appear when trying to visit secure firefox your connection (https) websites in Firefox. For troubleshooting secure connection problems with the error message Secure Connection Failed, see the Troubleshoot the "Secure Connection Failed" error message article. If you see the error message Your connection is not secure, see the article What does "Your connection is not secure" mean?. For troubleshooting other error messages, see Websites don't load - troubleshoot and fix error messages. Note: If you see this error message on major sites like Google, Facebook, YouTube and others in user accounts protected by Microsoft Family Safety filter, please refer to Microsoft's documentation for Windows Update KB2965142 (published on 6/9/2014) and Windows Update KB2981655 (published on 8/11/2014). Note: You may currently see this error message on major sites like Google, Facebook, YouTube and others on Windows 10 in user accounts protected by Microsoft family settings. To turn these settings off for a particular user, see the Microsoft support article, Turn off Microsoft family settings. Table of Contents1 Certificates and identification2 Get out of there!3 Technical information3.1 The certificate wil