I have been trying to solve this problem on and off for about a year now, but 99.99% of the time I try to access https://en.wiktionary.org/ , I get the following error: '''Secure Connection Failed''' '''An error occured during a connection to en.wikitionary.org PR_END_OF_FILE ERROR''' Error code: PR_END_OF_FILE_ERROR * The page you are trying to view cannot be shown because the authenticity of the received data could not be verified. * Please contact the website owners to inform them of this problem. Learn more... Try Again I have NEVER gotten this error message for any other website. And the strangest thing? Sometimes I CAN access Wikitionary with zero problems, but this phenomena tends to only happen when I attempt to access the website very late at night or really early in the morning. I cannot think of a single thing I have done differently when this happens. By the way, I am able to access Wikitionary from Microsoft Edge just fine, it is ONLY Firefox where I have this problem.