How to Fix the ‘PR_END_OF_FILE_ERROR’ Secure Connection Error

Hello, and today, I am going to show you how to fix the PR_END_OF_FILE_ERROR The PR end of file error, isn’t an error you’ll see on a regular basis. But it’s frustrating when you do, and it’ll need your immediate attention. If you’re a Safari or Chromium variant user, this error won’t affect you. It’s a Firefox only issue that has a few different fixes. There’s no deep technical knowledge required though, and you’ll have all the tools and skills you need to resolve the error.

For this video, we’ll show you how to fix the PR_END_OF_FILE_ERROR and how to avoid it in the future. But before we get too far, I winna let you know that there will be links to more resources in the video’s description.

And remember, subscribe and ring that bell to get notifications for future helpful content. So, let’s get started. There are five distinct fixes for the PR_END_OF_FILE_ERROR.

Note that we’re not going to present them in any particular order because any or all of these causes could be at fault. One of the big differences between Windows and Mac machines is the reliance on security and antivirus software. Both Linux and macOS have an infrastructure that means these types of programs aren’t necessary to browse the web in safety. As such, the first fix will apply primarily to Windows users using Firefox. The concept is that your security and antivirus see the cipher suites as a potential threat.

Taking this software out of the equation means you can test the connection without any interference.

While there are too many available solutions to give a specific detail here, there will be a similar process for all software. Access the dashboard for your solution and toggle it off. In lots of cases, there will be a marked button or switch for doing so. Once you’ve done this, exit out of the program and reboot your computer.

We recommend you shut down, wait 30 seconds, then restart. This gives your computer’s memory time to clear. Then check that the software isn’t running again, when you’re back onto your desktop as this can happen on start-up. Check your browser and see if the error persists. If not, you’re good to go about your browsing as before.

If you still see the PR_END_OF_FILE_ERROR though, you’ll want to look at the next few fixes.

Much like your security and antivirus software, your VPN and proxy settings could also have an impact on your browser. The reasons for this are similar to the previous section. The inherent functionality involved can block connections and cause your browser to think cipher suites don’t exist. The good news is that you would disable your VPN the same way as your antivirus.

It should be a one-click process. From there, reboot again, and check your connection in browser. The process to disable your proxy is more involved, but still achievable. For Mac users, first open system preferences, and then network. If you need to click the lock icon to make changes, do so here.

Select the network service you use, likely Wi-Fi in most cases when you’re ready, then click the advanced button. On the next screen, open the proxies tab. In our example, we have no proxies configured or selected. In your case, you may see some of these options checked. Your task here is to uncheck them, click okay, reboot your computer, then test your connection.

For Windows users, disabling your proxy server is just straightforward.

First, type proxy into the search bar and open the shortcut to the proxy settings. From here, scroll down to the manual proxy setup section, and toggle the use a proxy server switch to off. As with other methods, reboot your computer again, and try to navigate to a page. If you still have the PR_END_OF_FILE_ERROR, you may need to dig into your browser settings.

Your first instinct might be to skip over this solution, especially if you haven’t touched your browser’s SSL settings. However, it’s still worth going through this fix because it’s quick to accomplish and could resolve your issues without further work.

To reset your SSL settings, head to the hamburger menu within Firefox and click the help button. From here, select more troubleshooting information. This will pop a screen up in browser showing some diagnostics.

Here, click the refresh Firefox button and your browser will restart. This is enough to reset your SSL settings, so check out whether you can browse the web at this point. If not, there is another technical fix we can carry out. In short, your DNS is how you can browse the web using URL such as kinsta.com.

DNS over HTTPS is a protocol for these DNS requests through HTTPS.

The goal of the protocol is to stop machine in the middle of attacks and prevent malicious eavesdropping. But this normally helpful feature of Firefox can also cause the PR_END_OF_FILE_ERROR. The solution is to disable it. To do this, head to your Firefox preferences screen.

This is through the hamburger menu within the browser, or you could use a toolbar instead. From here make sure you’re on the general screen.

If you scroll down to the network settings section and click the settings button, you’ll open the connection settings. From here, find the enabled DNS over HTTPS option and uncheck the box. Once you restart Firefox, check your browser and see if the error has gone. At this point, you will have run through most of the fixes for the PR_END_OF_FILE_ERROR. If you still have no luck resolving it, rebuilding your Firefox browser profile should get you back up and running.

Before you do this, it’s a good idea to save your bookmarks. You can access the bookmark library in a few ways. You can use the library button in the toolbar, utilize a keyboard short cut, or click the bookmarks.

Here, select the all bookmarks option from the Tree Explorer and choose the import and export option at the top. It looks like two errors pointing in opposite directions. Click export bookmarks to HTML and save the file somewhere you can reach it again. From here, open the profile manager by typing about profiles, into the Firefox browser or bar and clicking enter.

This will bring up a screen showing your current list of profiles and a button to create a new one.

If you click this button, you can enter a new username. Once you confirm, this new user will show at the bottom of the profile manager. At this point, click launch profile and new browser and the PR_END_OF_FILE_ERROR should disappear. You’ll also want to import your bookmarks following our advice from earlier on. It’s the same process, but this time you’ll choose import bookmarks from HTML.

In the future, you’ll wanna make sure the PR_END_OF_FILE_ERROR won’t return. To do this, you should consider the following: Determine whether your third party security or antivirus software is actually needed. At the same time, consider whether you need a new solution or new settings that won’t cause the error again. You might also want to check your VPN solution for the same reasons.

Take a look at your proxy settings to see if a change is necessary.

If you’re causing an issue here, there may be other areas that your proxy is affecting. Your SSL settings are often set in an optimal way. As such, tinkering with them if you’re not an expert could spell disaster. It could be that you’ll see the PR_END_OF_FILE_ERROR again, regardless of your preventative measures. As such, having the knowledge on hand is going to serve you well alongside taking precautions.

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