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How to fix PR_END_OF_FILE_ERROR (SSL) in Firefox

Author:
cpcloudhosting

Published:

Updated on August 15, 2024

Reading Time: 4 min

Mozilla Firefox users may encounter the PR_END_OF_FILE_ERROR (Secure Connection Failed) when attempting to visit a website and the browser is unable to establish a secure connection. This error indicates that all cipher suites have failed, and users may see the same error message on any website they try to visit subsequently. While this error is not very common, it does require immediate attention.

Five Solutions to Fix PR_END_OF_FILE_ERROR #

  1. Uninstall Third-Party Security Suite
    • Some security tools like Bitdefender, REVE, and ESET can be overly protective, intercepting connection certificates and sending their own. This might trigger the PR_END_OF_FILE_ERROR.
    • Windows Users:
      • Locate the dashboard for your antivirus software and disable it.
      • Exit the program and shut down your machine. Wait for a minute before restarting.
      • Ensure that the software isn’t running on your desktop.
      • Check your browser to see if the error has cleared.
  2. Disable Your VPN or Proxy
    • Disable VPN:
      • Go to the settings of your VPN and disable it. Reboot your machine and check your browser.
    • Disable Proxy:
      • Mac Users:
        • Click the Apple icon, open system preferences, and select network.
        • Select the network you are using (usually Wi-Fi), click advanced, and uncheck all boxes under the proxies tab.
        • Restart your Mac and check your browser.
      • Windows Users:
        • Type “proxy” into the search bar and open the proxy settings shortcut.
        • Scroll to the manual proxy subsection and toggle the switch to off.
        • Reboot your computer and check your browser.
  3. Reset and Refresh Firefox SSL Settings
    • Open Firefox and click the hamburger menu (three-bar icon) in the upper right corner.
    • Select “Options,” then click “Help” and choose “More Troubleshooting Information.”
    • Click “Refresh Firefox” and confirm in the pop-up window.
    • After the refresh is complete, check your browser.
  4. Disable DNS over HTTPS
    • Go to Firefox preferences through the hamburger menu.
    • On the general screen, click the “Settings” button to open connection settings.
    • Find and uncheck the “Enable DNS over HTTPS” option.
    • Restart Firefox and see if the error has disappeared.
  5. Create a New Firefox Profile
    • Export Bookmarks:
      • Click the toolbar to show bookmarks or use a keyboard shortcut.
      • Click “Export Bookmarks to HTML” and save the file.
    • Create New Profile:
      • Type “about” into the browser bar and press enter.
      • Click “Create a New Profile,” enter a new username, and confirm.
      • Launch the new profile and check if the error persists.

FAQs #

What causes PR_END_OF_FILE_ERROR in Firefox?

  • Third-Party Security: Overzealous security tools may intercept connection certificates and send their own, causing the error.
  • VPN or Proxy Interference: These tools act as intermediaries, intercepting connections which can trigger this error message.
  • Unsupported or Incorrect Cipher Variance: Modifying SSL settings may force the browser to use an unsupported variance.
  • Corrupted Firefox Profile: Sometimes, a corrupted profile can be the cause.

Will this error happen again, or can I prevent it?

  • If you follow the recommended fixes, the error should not reoccur. However, switching antivirus software may trigger the error again. Avoid modifying SSL settings to prevent the issue.

Does this mean Firefox is not as good as other browsers?

  • Absolutely not! Firefox offers excellent privacy protection, cross-platform sync, and a wide range of extensions and plugins.

Is the security of my website causing PR_END_OF_FILE_ERROR for visitors?

  • Yes, it’s possible. If a visitor sees this error or a “Not Secure” warning, it indicates that your web page or website is not providing an encrypted connection, triggering protection software or the Firefox error message.

What happens if a website is not secure?

  • Unsecure websites are vulnerable to cyber threats like malware and cyberattacks, which can impact site functionality, prevent visitors from accessing the site, and compromise customer information.

How do I choose a secure web hosting company?

  • Our ultra-secure hosting at CP CLOUD HOSTING includes PCI-compliant hosting, malware scanning, 1 Tbps+ DDoS protection, web application firewall, brute force login protection, FTP security lock, and 2FA as part of the package.

Why is web hosting security important?

  • Security impacts your business by ensuring your website remains functional, protecting customer information, and maintaining trust. Malware and cyber-attacks can disrupt your services and harm your reputation.