How to fix SSL_ERROR_RX_RECORD_TOO_LONG Firefox error?

The error SSL_ERROR_RX_RECORD_TOO_LONG Firefox is a problem related to HTTPS protocol. You can switch to another web browser or use some third party VPN tool that might help you in resolving the issue. You can also get the required fix by altering the proxy settings. Check below the post for more detailed troubleshooting solutions.

The issue occurs while users trying to open a website In Firefox over a secure connection with the HTTPS protocol. This signifies that the web browser can’t verify the secure data which is usually because of an SSL certificate is not configured correctly.

If this happens, a Secure Connection Failed tab with SSL_ERROR_RX_RECORD_TOO_LONG Firefox error code opens up on the screen. Here, you might click on the Try again button that works for couple of minutes but to get rid of them permanently, you should identify and remove the underlying issue.

As said the error appears when there is a problem with the website’s SSL certificate. This indicates the website is being of poor quality. Since web browsers are designed to protect users from accessing such pages, this result in showing up of a Secure Connection failed tab on the browser screen.

However, if the web browser doesn’t support the required version of the TLS or Transport Layer Security, you are likely to receive this error. A misleading listing port can also be the reason for the issue under discussion.

Below, we have provided various troubleshooting solutions that should help you in resolving the problem. But before you start to struggle to fix this error, you should consider switching to a different web browser.

We recommend you use Opera. It is a safe and fast web browser that is not affected by this error. You will get a number of interesting features of Speed Dial, Ad Blocker, and Instant Search that cuts the distractions and makes you browse the web faster than any web browser.

Potential fixes for SSL_ERROR_RX_RECORD_TOO_LONG Firefox error

Fix 1: Try using a VPN

VPN is useful in protecting your privacy online.  In case of network problems on web browser, people use this virtual private network that enhances their web browsing security. People can set up a VPN on their Windows manually.

But this process takes longer time and also requires some how-to-knowledge. As an alternative, you can use a third party VPN. It will hide your IP address and change the geo-location to protect online privacy, secure your device from risky hacking and prevent websites to collect personal data from personalized ads and so on.

Fix 2: Select No Proxy Settings

Another simple fix is to open the website by replacing the https:// at the beginning of the URL with http://:

  • Open Firefox, click on the hamburger icon at the top right corner and then select Settings,
  • Scroll down to Network Settings and pick Settings,
  • If you see the web browser is configured with a non-essential proxy connection, select the No Proxy option,
  • Finally, click OK to save the changes, and restart Firefox.

Fix 3: Open Firefox in Troubleshoot Mode

  • Open Firefox, click on the top right hamburger icon and then select Help option,
  • Choose Troubleshoot Mode option from there,
  • Click on Restart and then click on Open option in the confirmation prompt you receive,
  • Connect to the website again and check the next if this provides you the required fix.

Fix 4: Switch off Firefox’s add-ons

  • Open Firefox,
  • Paste the below path in the address bar and hit Enter:
  • about: addons
  • Go to the Extension tab,
  • From there, toggle to the right to disable the problematic extension/ add-on,
  • Restart your web browser and open the problematic website and see if it still throws SSL_ERROR_RX_RECORD_TOO_LONG Firefox.

Fix 5: Reinstall Firefox

Many a user got the problem fix simply by reinstalling the Firefox. It is likely that the installation got corrupted and that led to the said error. Reinstalling Firefox in fresh thus automatically resolves the issue and the problem that it results in.

There are several ways of uninstalling Firefox. But, the best option is to uninstaller software that will help you in removing the selected program along with all its files and registry entries. After successfully uninstalling it, download the latest version from Mozilla’s website and install it again.

Fix 6: Refresh the web browser

Some of the users get the fix for SSL_ERROR_RX_RECORD_TOO_LONG Firefox error just by refreshing the web browser. Launch Firefox, type in about: support on the address bar and hit Enter. Click on the Refresh Firefox button there in and finally confirm the action by clicking on Refresh Firefox in the confirmation prompt.

Fix 7: Set security.tls.version.max to 0

  • Search for about:config on the Firefox’s address bar and hit Enter,
  • Click to Accept the Risk and Continue,
  • Now, in the search field, enter security.tls.version.max and then click on Edit button,
  • Enter O and then click on the checkbox to save the changes.

We would advise you try with changing both ecurity.tls.version.min and security.tls.version.max to 2 if the problem persists and see if this helps you in getting the fix.

Fix 8: Check your AV tool

Sometimes, SSL_ERROR_RX_RECORD_TOO_LONG Firefox error occurs because of antivirus solution on system. it might interfere with Firefox that leads to this and other similar errors. In that case, you should disable your antivirus features related to SSL.

If this does not help, you should consider completely disabling your antivirus application and check if that resolves the issue. In the worst case, you might have to delete your antivirus tool. If so, you should consider switching to a different antivirus software program.

Fix 9: Install Firefox’s latest version

Update your web browser so that you would be able to access the website that was earlier throwing the error message on screen:

  • Open Firefox, click on hamburger icon and then click Help option,
  • Select About Firefox,
  • In the new window appears, you will see the current version of Firefox. If there is any update available, it will automatically be downloaded.

 If none of the methods work and you still receive SSL_ERROR_RX_RECORD_TOO_LONG Firefox error, make sure you employ PC Repair Tool to check for possible Windows related issues to get their required fix automatically.  Here is its direct download link.


That’s all! We are now rounding off our discussion on how you can fix the a Secure Connection Failed error on Firefox and provide you with plenty of fixes that should help you in getting rid of the problem. If you have any other queries or know of a method that is not listed, drop a comment below.