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Secure Connection Restore Failed PR_CONNECT_RESET_ERROR in Firefox Windows 10/8/7
Mozilla Firefox's "pr_connect_reset_error" is making your sites inaccessible, which is a huge inconvenience. If you keep getting this error and are not interested in switching your web browser, you can follow a few methods to fix your problem. Here's how.
Often it is a small bug in your network or browser that causes the above mentioned problem. Other reasons are that your firewall is blocking your site connection, there is a non-working proxy set up on your machine, and so on.
The easiest way to fix the "pr_connect_reset_error" is to clear your browser's cache. This will remove the images and other files that the Firefox browser has cached, and resolve issues with these files.