Ssl_error_rx_record_too_long Firefox error

Matthew Adams
by Matthew Adams
Windows & Software Expert
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  • If you are getting a ssl_error_rx_record_too_long read our full guide below to fix this problem.
  • This error means that the browser can't verify the secure data, which is usually due to an SSL certificate that isn't correctly configured.
  • Should you encounter any other problems with Firefox, don't hesitate to check out our Firefox section.
  • If you need more information about browsers don't look farther than our Browsers Hub.
How to fix Ssl_error_rx_record_too_long Firefox error

Are you getting a ssl_error_rx_record_too_long error when trying to open a website in Firefox over a secure connection with the HTTPS protocol?

When that happens, a Secure Connection Failed tab opens with the ssl_error_rx_record_too_long error code.

This means that the browser can’t verify the secure data, which is usually due to an SSL certificate that isn’t correctly configured. This is how you can fix this error in Firefox.

Firefox is a great browser, but many users reported the error while using it. This can be a big problem, and speaking of this issue, here are some similar issues reported by users:

  • Ssl_error_rx_record_too_long Facebook, Wikipedia, Youtube, Onedrive, Pinterest, Spotify, Dropbox, Google, Gmail – This message can appear while visiting your favorite websites, and if you encounter this message, be sure to try some of our solutions.
  • Ssl_error_rx_record_too_long Windows 10 – This error can appear on any version of Windows, and even if you use Windows 7 or Windows 8.1, be sure to try some of our solutions since they are fully compatible with all versions of Windows.
  • Ssl_error_rx_record_too_long Kaspersky – According to users, your antivirus can cause this issue to appear. Many reported that Kaspersky caused this problem, but even if you don’t use Kaspersky, try disabling your antivirus and check if that helps.
  • Ssl_error_rx_record_too_long VPN – Sometimes your proxy can cause this issue if it’s not properly configured. To fix the problem, check proxy configuration or try using a VPN software.

How can I fix ssl_error_rx_record_too_long in Firefox?

1. Switch to a different browser

Before starting to struggle to fix this error, you should consider switching to a different browser. We recommend Opera as it’s a safe and fast browser that is not affected by the error.

This browser comes with a lot of features like a Speed Dial, Ab Blocker, and Instant Search that cut the distractions and make your browsing faster than on other browsers.

Another advantage is that you won’t need to download extensions or add-ons because the most useful features are built-in.

And talking about useful features, how about a free, no time limit VPN service included?

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2. Try using a VPN

PIA is one of the best VPN solutions

If you’re having ssl_error_rx_record_too_long in Firefox, you might be able to fix the problem by using a VPN. In case you’re not familiar, a VPN is a useful tool that can help you protect your privacy online.

And if you’re looking for the best, we recommend Private Internet Access VPN. It guarantees your safety, and it comes with unlimited bandwidth speeds.

If you care about streaming (who doesn’t nowadays?), PIA is optimized for that and offers over the top download speed and 3292+ global network servers to choose from.

Your identity will be protected at all times with a private IP address allocation and a no-logs policy to protect you from your ISP.

You can give it a try and convince yourself about all this. Don’t worry, there’s a 30-day money-back guarantee so you don’t risk anything.

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3 Reinstall Firefox

According to users, you might be able to fix ssl_error_rx_record_too_long error simply by reinstalling Firefox.

Sometimes your installation can get corrupted and that can lead to this and many other errors.

However, several users reported that they fixed the problem simply by reinstalling Firefox.

There are several ways to reinstall Firefox, but if you want to remove it completely, it’s advised to use uninstaller software.

In case you’re not familiar, uninstaller software is a special application that will remove the selected program along with all of its files and registry entries.

By using one of these tools, you’ll completely remove the selected application ensuring that there are no leftover files. If you’re looking for a powerful uninstaller software, we recommend Revo Uninstaller.

Why do we recommend Revo Uninstaller? Because it doesn’t only remove the program like a usual uninstall but is also delete any possible leftovers.

You need to delete those leftovers not only because after a while they will clog your computer but also because some programs won’t run properly after you reinstall them.

Another advantage is that you will get to uninstall multiple applications at once, just by selecting them on a list. And yes, you can also remove some Windows preinstalled apps.

Revo Uninstaller also comes bundled with 8 more cleaning solutions. After a scan and fix session, your computer will run just like after a fresh Windows installation.

Revo Uninstaller

Revo Uninstaller

Revo Uninstaller will not leave any traces after it uninstalls Firefox and also comes with a multi-level backup system!

Once you remove Firefox with this tool, download the latest version from Mozilla’s website and install it again. Several users also suggest using Beta or Nightly versions of Firefox.

These versions might not be as stable, but they should have the latest fixes available, so if you’re having this problem, Beta or Nightly version might be just what you need.


4. Enter the site URL with the HTTP Protocol

A simple fix that may work is to open the website with HTTP instead. All that’s required is to replace https:// at the beginning of the URL with http://.


5. Select the No Proxy Setting

  1. Press the Open menu button and select Options.
    Ssl_error_rx_record_too_long Wikipedia
  2. Scroll down to the Network Proxy section and click Settings.
    Ssl_error_rx_record_too_long Windows 10
  3. If the browser is configured with a non-essential proxy connection, select the No proxy option there.
    Ssl_error_rx_record_too_long Kaspersky
  4. Press the OK button and restart Firefox.

6. Open Firefox in Safe Mode

  1. First, click Open menu and select Help.
  2. Then, you can select the Restart with Add-ons Disabled option.
    Ssl_error_rx_record_too_long Youtube
  3. Press the Restart button to confirm the selected option.
  4. Press the Start in Safe Mode button.
  5. Now try to connect to the website again. Does it open in Safe Mode?

7. Switch off Firefox’s Add-ons

  1. If you’re still in Safe Mode, click Open menu, then Open Help Menu. Now select the Restart with Add-ons Enabled option.
  2. Type the following line in the URL bar and press Enter: about:addons
  3. Press the Disable buttons to switch the add-ons off.
    Ssl_error_rx_record_too_long VPN
  4. Restart the browser, and open the website again.

8. Refresh the browser

  1. To open the page tab shown below type the following line in the URL bar and press Enter: about:support
  2. Now press the Refresh Firefox button there.
    Ssl_error_rx_record_too_long VPN
  3. Click Refresh Firefox in the confirmation window.

9. Check your antivirus

Sometimes ssl_error_rx_record_too_long error can appear due to your antivirus. Your antivirus can interfere with Firefox and that can lead to this and other similar errors.

To fix this problem, try disabling certain antivirus features related to SSL. If that doesn’t help, your next step would be to completely disable your antivirus and check if that solves the problem.

In a worst-case scenario, you might even have to remove your antivirus tool completely. If removing the antivirus helps, you should consider switching to a different antivirus software.

There are many great security solutions on the market, but if you want the best security that won’t interfere with your system, you should consider switching to BullGuard.


10. Check if your proxy settings are correct

According to users, this problem can appear due to your proxy settings. Your proxy can interfere with Firefox and cause ssl_error_rx_record_too_long error to appear.

To fix the problem, it’s required that you configure your proxy properly. Once you configure the proxy, check if the problem is still there.


11. Set security.tls.version.max to 0

  1. Open a new tab in Firefox, enter the following line in the address bar and press Enter: about:config
  2. You might get a warning message. Click I accept the risk button.
    Ssl_error_rx_record_too_long Windows 7
  3. Enter security.tls.version.max in the search field and double-click security.tls.version.max from the list of results. Now set the value to 0 and click OK to save changes.
    Ssl_error_rx_record_too_long Kaspersky

We have to mention that some users are suggesting to change both security.tls.version.min and security.tls.version.max to 2, so you might want to try that as well.

After doing that, check if the problem is resolved. Keep in mind that this is just a workaround, and changing this setting can sometimes affect your security, so be sure to use this method only as a temporary solution.


12. Install the latest updates

  1. Open Firefox and click the Menu icon in the top right corner.
  2. Choose Help > About from the menu.
    Ssl_error_rx_record_too_long Windows 7
  3. A new screen will now appear and you’ll see the current version of Firefox you’re running. If any updates are available, they will be downloaded automatically.
    Ssl_error_rx_record_too_long Facebook

Once the Firefox is up to date, check if the problem is still there.

FAQ: Read more about SSL_Error_rx_record_too_long

  • What is SSL_Error_rx_record_too_long?

This means that the browser can’t verify the secure data, which is usually due to an SSL certificate that isn’t correctly configured.

  • How do I fix the secure connection failed in Firefox?

First, try to check any safety filters. If that’s not the problem, here’s an excellent guide on how to fix this problem.

  • How can I fix SSL_Error_rx_record_too_long?

First, why don’t you try another browser? If you insist on fixing yours, we have a perfect guide that will help you.

Editor’s Note: This post was originally published in June 2018 and has been since revamped and updated in August 2020 for freshness, accuracy, and comprehensiveness.

  • I only started to encounter this error with the recent update to version 61.0 (64bit). It is quite annoying, it seems the no proxy setting does work to a point. May need to refresh a few times. Hopefully, another update corrects this for good.