Recent answers to Chat boxhttps://support.mozilla.org/en-US/questions/13856992022-08-10T08:58:21-07:00If you use extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) that can block c2022-08-10T08:58:21-07:00cor-elhttps://support.mozilla.org/en-US/questions/1385699#answer-1526259<p>If you use extensions ("3-bar" menu button or Tools -&gt; Add-ons -&gt; Extensions) that can block content (Adblock Plus, NoScript, DuckDuckGo PE, Disconnect, Ghostery, Privacy Badger, uBlock Origin) always make sure such extensions do not block content.
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<ul><li>make sure your extensions and filters are updated to the latest version
</li><li><a href="https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems" rel="nofollow">https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems</a>
</li></ul>
<p>Firefox 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.
</p>
<ul><li>click the shield icon for more detail and possibly disable the protection
</li></ul>
<p>You can check the Web Console for relevant-looking messages about blocked content.
</p>
<ul><li><a href="https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop" rel="nofollow">https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop</a>
</li><li><a href="https://support.mozilla.org/en-US/kb/smartblock-enhanced-tracking-protection" rel="nofollow">https://support.mozilla.org/en-US/kb/smartblock-enhanced-tracking-protection</a>
</li><li><a href="https://support.mozilla.org/en-US/kb/trackers-and-scripts-firefox-blocks-enhanced-track" rel="nofollow">https://support.mozilla.org/en-US/kb/trackers-and-scripts-firefox-blocks-enhanced-track</a>
</li></ul>
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<p>You can try these steps in case of issues with webpages:
</p><p>You can reload webpage(s) and bypass the cache to refresh possibly outdated or corrupted files.
</p>
<ul><li>hold down the Shift key and left-click the Reload button
</li><li>press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux)
</li><li>press "Command + Shift + R" (Mac)
</li></ul>
<p>Clear the Cache and remove the Cookies for websites that cause problems via the "3-bar" Firefox menu button (Settings).
</p><p>"Remove the Cookies" for websites that cause problems:
</p>
<ul><li>Settings -&gt; Privacy &amp; Security<br>Cookies and Site Data: "Manage Data"
</li></ul>
<p>"Clear the Cache":
</p>
<ul><li>Settings -&gt; Privacy &amp; Security<br>Cookies and Site Data -&gt; Clear Data -&gt; [X] Cached Web Content -&gt; Clear
</li></ul>
<ul><li><a href="https://support.mozilla.org/en-US/kb/clear-cookies-and-site-data-firefox" rel="nofollow">https://support.mozilla.org/en-US/kb/clear-cookies-and-site-data-firefox</a>
</li><li><a href="https://support.mozilla.org/en-US/kb/how-clear-firefox-cache" rel="nofollow">https://support.mozilla.org/en-US/kb/how-clear-firefox-cache</a>
</li></ul>
<p>Start Firefox in <b>Troubleshoot Mode</b> to check if one of the extensions ("3-bar" menu button or Tools -&gt; Add-ons -&gt; Extensions) or if <b>hardware acceleration</b> or <b>userChrome.css</b> is causing the problem.
</p>
<ul><li>switch to the DEFAULT theme: "3-bar" menu button or Tools -&gt; Add-ons -&gt; Themes
</li><li>do NOT click the "Refresh Firefox" button on the Troubleshoot Mode start window
</li></ul>
<ul><li><a href="https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode" rel="nofollow">https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode</a>
</li><li><a href="https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems" rel="nofollow">https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems</a>
</li></ul>
<ul><li><a href="https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop" rel="nofollow">https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop</a>
</li><li><a href="https://support.mozilla.org/en-US/kb/smartblock-enhanced-tracking-protection" rel="nofollow">https://support.mozilla.org/en-US/kb/smartblock-enhanced-tracking-protection</a>
</li><li><a href="https://support.mozilla.org/en-US/kb/trackers-and-scripts-firefox-blocks-enhanced-track" rel="nofollow">https://support.mozilla.org/en-US/kb/trackers-and-scripts-firefox-blocks-enhanced-track</a>
</li></ul>