PR_END_OF_FILE_ERROR – What Is It + How to Fix It [Guide]

Encountering the PR_END_OF_FILE_ERROR on Firefox can be a real headache, as it hinders the browser from creating a secure link with a website. But fear not, we’ve got several methods that will help you tackle this issue.

What Causes The PR_END_OF_FILE_ERROR?

The PR_END_OF_FILE_ERROR is an issue that Firefox users might stumble upon. It pops up when the browser is unable to form a secure connection with the website due to a mismatch in cipher suites. Essentially, the browser has exhausted its list of cipher suites and hasn’t found a compatible one.

How Do You Fix The PR_END_OF_FILE_ERROR

Here are all the possible solutions to this error:

Fix 1: Deactivate Your Computer’s Proxy

A proxy server routes your data via a third-party server for privacy and geo-spoofing, which can sometimes interfere with your connection. Here’s how to switch it off:

For Windows Users
1. Press Windows + I to open Settings.
2. Click on Network & Internet on the left sidebar.
3. Select Proxy on the right pane.
4. Deactivate the Automatically detect settings option.
5. Click on Set up next to Use a proxy server.
6. Turn off the Use a proxy server option and click on Save.
7. Restart your PC and try opening your site in Firefox.

For macOS Users
1. Click on the Apple logo in your Mac’s top-left corner and select System Preferences.
2. Click on Network on the following page.
3. Select Wi-Fi on the left sidebar and click on Advanced on the right.
4. Open the Proxies tab to view your proxies.
5. Deactivate all the options in the Select a protocol to configure section and click on OK.
6. Restart your Mac and try launching your site in Firefox.

Fix for Firefox
1. Launch Firefox, click on the three horizontal lines in the top-right corner and select Settings.
2. Scroll down to the bottom and select Settings in the Network Settings section.
3. Select No proxy on the following page and click on OK.
4. Close and reopen Firefox, then try launching your site.

Fix 2: Switch Off Your VPN App
VPN apps route your internet data via a proxy server, which can sometimes cause issues with your internet-enabled apps. Your Firefox error may be due to a faulty VPN service. In this case, switch off your VPN app, and your issue should be resolved.

Fix 3: Deactivate Your Antivirus Software
Your antivirus software might have flagged Firefox as a potential threat. Try deactivating your antivirus software temporarily and check if the issue persists.

Fix 4: Disable DNS over HTTPS
DNS over HTTPS is a security feature in Firefox that can sometimes cause issues. Here’s how to disable it:

1. Launch Firefox, click on the three horizontal lines in the top-right corner and select Settings.
2. Scroll down to the bottom and select Settings in the Network Settings section.
3. Deactivate the Enable DNS over HTTPS option.
4. Click on OK at the bottom.
5. Close and reopen Firefox, then try launching your site.

Fix 5: Refresh Firefox Settings
If your “pr_end_of_file_error” issue persists, there might be a problem with Firefox’s configuration. Try refreshing Firefox settings or reinstall the web browser to eliminate any potential issues.

Conclusion

The PR_END_OF_FILE_ERROR is a Firefox-specific error that pops up when the browser can’t establish a secure connection with the website. It can be caused by an incorrect or corrupted browser profile, incorrect ciphers, misconfiguration VPN or proxy, or third-party security software. The methods mentioned above should help you overcome this error.

Remember to restart your browser after each fix to check if the problem has been resolved.