An HTTP 404 Error on your PC or Mac computer is usually caused by some information saved by your web browser that's preventing Quickflix from playing properly.
Troubleshoot your browser
Clear browser cookies
Your browser may be referencing an out-dated or corrupted setting in the cookie file.
Restart your browser
Sometimes restarting your browser can clear this issue. Quit your browser, restart it, and play your movie or TV show again.
Try another browser
A browser extension, plug-in or add-on may be causing this error. Try playing your movie or TV show in another browser.