
Turn Off Your VPN or Proxyīrowsing the internet using a proxy or VPN server can also trigger the PR_END_OF_FILE_ERROR. Similar to the export bookmark process, open the bookmark manager and choose Import Bookmarks from HTML, then select the saved file. Now all you have to do is import the bookmarks to the new profile. If it works, then the corrupt Firefox profile was the main issue causing secure connection failed error.


Try to revisit the website with the new profile.

However, if Firefox reaches the end of the cipher suite file and doesn’t find a match, it results in the PR_END_OF_FILE_ERROR message. When you visit a website that uses SSL or TLS, the browser runs through the cipher suite until it finds a matching algorithm for the connection. Your browser has a cipher suite – a set of algorithms that makes a secure connection over an encrypted protocol possible. To understand why PR_END_OF_FILE_ERROR happens, we have to understand the process of establishing a secure connection between a browser and a website. Thus, this often affects many websites you try to visit, as the problem is on the client-side. It is a Firefox-specific error and won’t appear in any other browser.

The PR_END_OF_FILE_ERROR error message appears when the Mozilla Firefox browser can’t establish a secure connection.
