Internet, Networking, & Security Error Messages How to Fix 'ssl_error_rx__too_long' Troubleshooting this Firefox error message Share Pin Email Print Error Messages Browsers Cloud Services Error Messages Home Networking 5G Antivirus VPN Web Development Around the Web View More By Daniel N. Martin Writer Daniel Martin is a writer and researcher with 10+ years' experience. He is a professional librarian and an experienced tech and information literacy teacher. our editorial process LinkedIn Daniel N. Martin Updated January 13, 2020 The SSL Error in Firefox is one of the most common issues that users may encounter when attempting to connect with a website. If you want to know how to solve the 'SSL_Error_rx_Record_too_long error' in Firefox, check out this helpful guide! What Does the 'SSL_Error_rx_Record_too_long' Message Mean in Firefox? The SSL Error in Firefox message is a very common error that has been reported for users of Windows 7, 8.1, and Windows 10. Errors like this occur when you try to use Firefox to connect to a website using a secure connection. This error usually happens due to issues with how the website’s SSL certificate has been configured, leaving you unable to connect to the website’s port. These errors have been reported when trying to log into popular websites such as YouTube, Pinterest, OneDrive, Facebook, Gmail, Spotify, and Dropbox. Getty Images/RapidEye While the SSL Error in Firefox is almost always due to websites experiencing problems with their servers, there are several potential reasons that you are receiving this error message. Antivirus programs could also be to blame for your receiving the error message, or your proxy server may be experiencing issues. Fortunately, there are several methods that you can use to determine what’s causing the problem and what you can do to fix it on your computer. How to Solve 'SSL_Error_rx_Record_too_long' Error in Firefox Use HTTP protocol. Enter the website’s URL as usual, but replace the https:// at the beginning with http://. Try entering the modified URL in a new window or tab and see if that fixes the problem. This works because HTTPS is different from HTTP. Specifically, the 's' in HTTPS indicates that the URL is secure. If you're experiencing an SSL error, this might be one way to work around it. If you decide to use the HTTP version of a website, you should be aware that you're entering a less secure version of the site. Be very cautious about sharing information while on a site without the secure URL. Use Firefox Safe Mode. You might be surprised to learn that Firefox has a Safe Mode. Using this can help resolve the 'SSL_Error_rx_Record_too_long' error, and allow you to access the website you are trying to reach. Once Safe Mode has been enabled, you should be able to access the website without issue. Using Safe Mode to open the browser will temporarily return your version of Firefox to its default theme, along with shutting down any add-ons you have running. Check Firefox proxy settings. If your Firefox browser’s proxy settings are not put together correctly, you might experience the SSL Error in Firefox. To check if this is the case, you just have to open your browser settings and take a look. With Firefox open, select the Hamburger Menu > Options > Network Proxy > Settings. If your version of Firefox is using a proxy connection that is not needed, select the No Proxy checkmark, then select OK to restart Firefox and update your settings. Check antivirus software. It may be the case that your antivirus software is obstructing Firefox’s ability to connect with websites and causing you to experience the 'SSL_Error_rx_Record_too_long error'. Make sure that your antivirus software is not to blame by opening the program and ensuring any SSL related features are disabled. Should this not resolve the problem, you should try to temporarily disable your antivirus program and see if the issue is fixed. You could also try uninstalling the entire antivirus program and replacing it with a better antivirus program that does not interfere with your system. Reset Firefox. If all else fails, you should try restoring your Firefox browser to the default settings. While doing so will delete any themes and add-ons you have installed, it will usually fix any website connection issues.