Seneste svar på page shows error code ""400 bad request.https://support.mozilla.org/da/questions/13350672021-05-04T06:15:40-07:00This issue is usually caused by corrupted cookies or blocked cookies.
check the permissions for the2021-05-04T06:15:40-07:00cor-elhttps://support.mozilla.org/da/questions/1335067#answer-1410687<p>This issue is usually caused by corrupted cookies or blocked cookies.
</p>
<ul><li>check the permissions for the domain in the currently selected tab in "Tools -&gt; Page Info -&gt; Permissions"
</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You can reload webpage(s) and bypass the cache to refresh possibly outdated or corrupted files.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 (Options/Preferences).
</p><p>"Remove the Cookies" for websites that cause problems:
</p>
<ul><li>Options/Preferences -&gt; Privacy &amp; Security<br>Cookies and Site Data: "Manage Data"
</li></ul>
<p>"Clear the Cache":
</p>
<ul><li>Options/Preferences -&gt; Privacy &amp; Security<br>Cookies and Site Data -&gt; Clear Data -&gt; Cached Web Content: Clear
</li></ul>
<p>Start Firefox in <b>Safe 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.
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<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 Safe Mode start window
</li></ul>
<ul><li><a href="https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode" rel="nofollow">https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-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>