hello Ronny, This is a very common issue, follow the step and instruction easy resolved your problem. '''Clear all cookies, site data and cache''' *Click the menu button. and select Options. Preferences. *Select the Privacy & Security panel and go to the Cookies and Site Data section. *Click the Clear Data… button. The Clear Data dialog will appear. ... *Click Clear. '''After complete the above steps and visit the given link:''' https://support.mozilla.org/en-US/kb/websites-dont-load-troubleshoot-and-fix-errors i hope to resolve your problem then reply back to me. Thank you! Regards, Arman khan