Start Firefox in Safe Mode to check if one of the extensions ('3-bar' menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration or userChrome.css is causing the problem.

Options/Preferences -> Privacy & SecurityĬookies and Site Data -> Clear Data -> Cached Web Content: Clear.

'Remove the Cookies' for websites that cause problems:

press 'Ctrl + F5' or press 'Ctrl + Shift + R' (Windows,Linux)Ĭlear the Cache and remove the Cookies for websites that cause problems via the '3-bar' Firefox menu button (Options/Preferences).

hold down the Shift key and left-click the Reload button.

You can reload web page(s) and bypass the cache to refresh possibly outdated or corrupted files. You can try these steps in case of issues with web pages: You can check the Web Console for messages about blocked content. You can click shield icon for more detail and possibly disable the protection. On an apple macintosh computer, these show up looking similar to files, often with a oracle java emblem indicating the java runtime environment is needed to run.

make sure your extensions and filters are updated to the latest versionįirefox shows a purple shield instead of a gray shield at the left end of the location/address bar in case Enhanced Tracking Protection is blocking content.

If you use extensions ('3-bar' menu button or Tools -> Add-ons -> Extensions) that can block content (Adblock Plus, NoScript, Disconnect, Ghostery, Privacy Badger, uBlock Origin) always make sure such extensions do not block content. If JavaScript isn't working properly then it is likely that you have an extension that blocks JavaScript. JavaScript is builtin, so no need to download.

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