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 the ssl_error_rx_record_too_long error in Firefox.
How to fix ssl_error_rx_record_too_long in Firefox?
Firefox is a great browser, but many users reported ssl_error_rx_record_too_long 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 7, 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.
Solution 1 – 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 the replace https:// at the beginning of the URL with http://. Open a blank tab and then input the website’s URL again starting with http:// instead.
Solution 2 – Select the No Proxy Setting
Open Firefox’s connection settings to check if you’re using a Proxy connection you don’t need. Then, configuring the browser’s No proxy setting might do the trick if you connect directly. You can configure that setting as following:
- Press the Open menu button and select Options.
- Scroll down to the Network Proxy section and click Settings.
- If the browser is configured with a non-essential proxy connection, select the No proxy option there.
- Press the OK button and restart Firefox.
Solution 3 – Open Firefox in Safe Mode
Firefox, like Windows, has a Safe Mode you can open the browser in. This can help fix various browser errors, including the ssl_error_rx_record_too_long error. Safe Mode will temporarily switch off your add-ons and hardware acceleration and revert Firefox to its default theme. Like this, you might be able to open a website that wasn’t otherwise opening in Firefox.
- First, click Open menu and select Help.
- Then, you can select the Restart with Add-ons Disabled option.
- Press the Restart button to confirm the selected option.
- Press the Start in Safe Mode button.
- Now try to connect to the website again. Does it open in Safe Mode?
Solution 4 – Switch off Firefox’s Add-ons
If the website does open in Safe Mode, then you don’t really need to fix it anymore. However, you might still be able to fix the ssl_error_rx_record_too_long error without opening the browser in Safe Mode. Since the site is opening in Safe Mode, a few add-ons connecting to web servers are probably causing the SSL error. You can switch off Firefox’s add-ons as follows:
- If you’re still in Safe Mode, click Open menu > Open Help Menu. Then, select the Restart with Add-ons Enabled option.
- Type about:addons in the Firefox URL bar and press Enter.
- Press the Disable buttons to switch the add-ons off.
- Restart the browser, and open the website again.
Solution 5 – Refresh the Browser
Restoring a browser to its default settings is always a good fix for various browser issues. This will undo all the settings you’ve configured in Firefox and delete all add-ons and themes, though. You can refresh the Firefox browser as follows:
- Type about:support in the URL bar and press Enter. That opens the page tab shown in the snapshot below.
- Now press the Refresh Firefox button there.
- Click Refresh Firefox in the confirmation window.
Solution 6 – 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 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.
Solution 7 – 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.
Solution 8 – Try using a VPN
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.
Several users reported that using a VPN fixed this problem for them, so you might want to consider getting a VPN tool. There are many great VPN applications on the market, but one of the best is CyberGhost VPN (currently 77% off), so be sure to try it out.
Solution 9 – Set security.tls.version.max to 0
Firefox comes with various hidden settings, and if you’re having ssl_error_rx_record_too_long error, you might be able to fix the problem by changing one of these settings. It seems that security.tls.version.max setting is causing this problem, but you can change it by doing the following:
- Open a new tab in Firefox, enter about:config and press Enter.
- You might get a warning message. Click I accept the risk button.
- 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.
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.
Solution 10 – Install the latest updates
If you keep getting ssl_error_rx_record_too_long error message in Firefox, you might be able to fix the issue simply by updating Firefox to the latest version. Firefox usually automatically updates itself, but sometimes you might miss a certain update.
However, you can always install the updates manually by doing the following:
- Open Firefox and click the Menu icon in the top right corner.
- Choose Help > About from the menu.
- 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.
Once the Firefox is up to date, check if the problem is still there.
Solution 11 – 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 simple but powerful uninstaller software, we recommend trying IOBit Uninstaller.
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.
Solution 12 – Temporarily switch to a different browser
If you keep getting ssl_error_rx_record_too_long error in Firefox, you might want to consider switching to a different browser until the issue is resolved. Before you switch, be sure to export your browsing history and bookmarks.
Now run Google Chrome or Edge and check if the problem appears. If not, import your browsing history and bookmarks. Keep in mind that this is just a temporary solution, and once you manage to fix the problem, you can go back to Firefox.
Those are some of the best fixes to resolve the ssl_error_rx_record_too_long error in Firefox. This Windows Report article also provides more general fixes for Firefox that might come in handy.
Editor’s Note: This post was originally published in May 2017 and has been since completely revamped and updated for freshness, accuracy, and comprehensiveness.