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Beginning in version 52, Firefox no longer loads NPAPI plugins except Adobe Flash. How to reset the default user agent on Firefox Learn how to reset your Firefox "user agent" so that websites can detect your correct browser and version and display the way Recover lost bookmarks on Firefox Developer Edition Learn a simple method for running both Firefox Developer Edition and standard Firefox versions without losing your bookmarks. See instructions on how to create a new profile. 7. this content

You should try to remove any permissions those applications have for Firefox, and then add them again. To start Firefox in Safe Mode: Click the menu button , click help and select Restart with Add-ons Disabled.... Delete the Firefox program folder, which is located in one of these locations by default: C:\Program Files\Mozilla Firefox C:\Program Files (x86)\Mozilla Firefox Reinstall Firefox - see How to download and install If the error page shows a "SEC_ERROR_UNKNOWN_ISSUER" error, see the How to troubleshoot the error code "SEC_ERROR_UNKNOWN_ISSUER" on secure websites article.

Firefox Won't Load Pages

Change your proxy settings: If you don't connect to the Internet through a proxy (or don't know whether you connect through a proxy), select No Proxy. Contact Us Privacy Policy Legal Notices Report Trademark Abuse Source Code Twitter Facebook Firefox Friends Switch to mobile site Skip to main content Switch language Skip to search X Tap here Problems with email and how to find help Find out the right direction to get help using webmail in Firefox and links to support pages for popular web-based email services. These fine people helped write this article: AliceWyman, Chris_Ilias, philipp, Tonnes, yfdyh000, pollti, Artist, DineshMv.

How to troubleshoot the error code "SEC_ERROR_UNKNOWN_ISSUER" on secure websites On websites which are supposed to be secure (the URL begins with "https://"), Firefox must verify that the certificate presented by This can fix slowness, crashing, search hijacking and other problems. In the dialog that opens click on Install certificate… and follow the on-screen instructions.If you use a 2015 version of Kaspersky: uncheck the Scan encrypted connections option. Firefox Not Working After Update Uncheck the Enable HTTPS Scanning setting and confirm this by clicking OK.

Submitting a bug for sync? Firefox Not Loading Pages mozilla Ask a question Sign In English Search Home Firefox Fix slowness, crashing, error messages ... 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 https://support.mozilla.org/en-US/kb/firefox-wont-start-find-solutions What do the SSLv3 error messages mean on Firefox?

Find out about common scams and how to protect yourself from them. Mozilla Firefox Problems If you suspect this might be the case, please contact your IT department to ensure the correct configuration of Firefox to enable it working properly in such an environment, as the What to do when searches take you to the wrong search website Firefox searches going to the wrong website can be caused by your Internet provider, an add-on, toolbar or malware. You can click View… in order to closer inspect the untrusted certificate as well.

Firefox Not Loading Pages

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 https://support.mozilla.org/en-US/products/firefox/fix-problems What to do when searches take you to the wrong search website Firefox searches going to the wrong website can be caused by your Internet provider, an add-on, toolbar or malware. Firefox Won't Load Pages Firefox previously worked If Firefox previously worked but suddenly doesn't start, it may be due to some corrupt data in your settings. Firefox Can't Load Websites But Other Browsers Can Click the arrow next to Details to display the list of items that can be cleared.

Sometimes plugins used in Firefox (such as Adobe Reader, Flash, Java and Silverlight) can cause problems that may be fixed in the latest plugin version. news Uncheck the Show safe results option for those websites which are showing an error message. Firefox keeps crashing at startup If Firefox keeps crashing when you try to start it and other solutions don't work, a clean reinstall can often fix the problem. The problem happens in all web browsers This is probably a problem with your internet connection. Firefox Unable To Connect

Failed to read the configuration file This error is caused by a problem with Firefox program files. Once open, Close Firefox. Quit Firefox: Click the menu button and then click ExitQuit . have a peek at these guys If you connect to the Internet through a proxy, compare Firefox's settings to another browser's (such as Internet Explorer — see Microsoft's guide to proxy settings)(such as Safari — see Safari:

Content available under a Creative Commons license. Problems With Firefox Not Responding Restart Firefox in Safe Mode4 4. Follow these steps to completely remove and reinstall Firefox.

Firefox will close to refresh itself.

Submitting a bug for sync? Reset your Master Password if you've forgotten it You can reset your Firefox master password if you've forgotten it. Right-click the Firefox icon on the taskbar. Firefox Problems 2016 Here's how to re-enable it.

Can't add, change or save bookmarks - How to fix This article shows you what to do if you cannot add new bookmarks or make other changes to your bookmarks. Firefox is stuck in Safe Mode This article describes why Firefox may start in Safe Mode when you expect it to start normally and how to fix the problem. Portions of this content are ©1998–2017 by individual mozilla.org contributors. http://yeahimadork.com/firefox-not/error-message-while-closing-ff.php Learn to stay safe.

Fix "The bookmarks and history system will not be functional" error message "Firefox is already running but is not responding" error message - How to fix it How to allow Java In Safe Mode, Firefox temporarily deactivates extensions, hardware acceleration, and some other advanced features to help you assess whether these are causing the problem. mozilla Ask a question Sign In English Search Home Support Forum Firefox have an error which says mozilla error ... Click the arrow next to Details to display the list of items that can be cleared.

mozilla Ask a question Sign In English Search Home Firefox Fix slowness, crashing, error ... If you don't see any of the error messages above, check to see if any of the specific problems below match what you see: The website loads but doesn't work properly