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Fix PR_END_OF_FILE_ERROR Firefox Secure Connection Failed Error

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Visiting a website through your Mozilla Firefox browser may sometimes trigger issues such as the error message “Secure Connection Failed” with error code PR_END_OF_FILE_ERROR. While it may be scary to see a problem when you try to reach a website, the PR_END_OF_FILE_ERROR issue may not always be a real security threat

For the most part, it only means that Firefox cannot get a secure connection error message when accessing a website you want to visit. You may also have an issue with your browser or there are updates that need to be installed. In some cases, your VPN service, proxy settings protocol, proxy connection server, or third-party antivirus software may be blocking the connection. Lastly, it may also be caused by problems with the website you are visiting or a corrupted Firefox profile.

Secure-Connection-Failed-PR_END_OF_FILE_ERROR-Error-on-Mozilla-Firefox-Browser

How to Fix Secure Connection Failed PR_END_OF_FILE_ERROR Error on Mozilla Firefox Browser

Fortunately, like with Chrome or any other browser, you can troubleshoot the Firefox browser error message PR_END_OF_FILE_ERROR (Secure Connection Failed) when accessing a website with SSL settings or HTTPS using a few solutions. This error can happen both on Windows 10 PC and Mac computer. Below are several ways to fix the error and continue browsing content on the website you want to visit. Follow each step and check if the error message with the network connection issue still occurs.

Solution #1 – Reset or Refresh your Firefox Browser

firefox-new-logo
  • Launch your Firefox browser.
  • On the upper-right corner, click the three-diagonal line icon.
  • Go to Help.
  • Select Troubleshooting Information.
  • On the right panel, go to Give Firefox a tune-up.
  • Click Refresh Firefox.
  • A confirmation message will appear.
  • Click the Refresh Firefox button.

Solution #2 – Disable Third-Party Antivirus Software on Windows 10 PC

You should disable any third-party security software you are using temporarily such as Avast, Kaspersky, BitDefender and those from other known developers.

  • Open the Control Panel of your device.
  • Select Programs and Features.
  • Look for your third-party antivirus software.
  • Highlight it. 
  • Click Uninstall.
  • Follow the instructions.
  • Once done, restart your computer.

Solution #3 – Disable your VPN Service or Proxy Server

Disable-your-VPN-Service-or-Proxy-Server
Credit: Dan Nelson/Pexels

This is how to do it on PC.

  • Go to the Control Panel of your device.
  • Select Programs and Features. 
  • Highlight the VPN Server you are using.
  • Click the Uninstall button.
  • Follow the rest of the instructions to uninstall your VPN.
  • Restart your computer.
  • To disable your Proxy Server, go to the Settings menu.
  • Click Network.
  • Go to Proxy.
  • Look for the Use a proxy server option.
  • Toggle it to Off.
  • Restart your computer.

Use a Reliable VPN Service on PC and Mac

You can also change the VPN company that you are using to a more secure, reliable and those that have features exceeding industry-standard. These are some of today’s leading VPN service provider, see which one works for you.

Solution #4 – Create and Set a New Profile for your Firefox Browser

Create-and-Set-a-New-Profile-on-your-Firefox-Browser

Here’s how to create a new Firefox profile:

  • First, export bookmarks to your new profile.
  • On your Firefox browser, click the Bookmark icon.
  • Go to Bookmarks.
  • Select Show All Bookmarks.
  • Go to Import and Backup.
  • Click Export Backups to HTML.
  • Save your bookmarks to your preferred location.
  • On a new tab, enter about:profiles on the address bar.
  • Click Create a New Profile.
  • Click Next.
  • Enter a Profile Name.
  • Click Finish.
  • Now, click the Bookmark icon again.
  • Go to Bookmarks.
  • Click Show All Bookmarks.
  • Click Import and Backup.
  • Select Import Bookmarks to HTML.
  • Choose the saved location of your bookmarks.
  • Click Open.
  • Restart your Firefox browser.

Which of the solutions above helped you fix the Firefox error PR_END_OF_FILE_ERROR? We want to know what works so please do share it with us in the comments below.

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