Mozilla Firefox Help

  If you still face the Firefox error message SEC_ERROR_EXPIRED_CERTIFICATE after completing the above steps, go through the steps below and check whether the website you’re visiting has an expired SSL/TLS Certificate. In the address bar, click on the padlock. If the SS/TLS Certificate is expired, you’ll get a ‘Connection not secure’ message.   Fix Firefox Error Click on the  Connection not secure option  and click on ‘ More Information .’ Once the Page info pop up opens, check for the expiry date. If the certificate is expired, as a website visitor, you will not be able to do anything unless the website owner renews it. If you’re the owner of the website, then it’s recommended to renew the SSL/TLS Certificate from a trusted Certificate Authority without delaying it further.                   Call   1-856-514-8666  for help and support of Fix Firefox Error.

  All of your personal settings, bookmarks, and other information are kept in your  Firefox profile . Firefox needs an unlocked profile to start up, and if the profile is locked, it displays the message,  Firefox is already running, but is not responding . This article explains what to do if you see this message and how to prevent it from showing at startup. End Firefox processes If Firefox did not shut down normally when you last used it, Firefox might still be running in the background, even though it is not visible.  If you try to open it while it's running, an error message will appear with the option to click  Close Firefox . If that doesn't solve the problem, restart your computer or try the following options.  Fix Firefox Error  Use the Windows Task Manager to close the existing Firefox process Right-click on an empty spot in the Windows task bar and select  Task Manager  (or press  Ctrl + Shift + Esc ).  When the Windows Tas...