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EnglishWhy does support.mozilla.org say JavaScript is disabled or a required part couldn't load?
Updated
support.mozilla.org shows this message when your browser isn't running JavaScript or when a required part of the page fails to load. The site relies on JavaScript to render its content, so if scripting is blocked or a resource can't be fetched, you'll see a notice instead of the page. The fix is usually to enable JavaScript, then check for extensions, ad blockers, or network problems that are interfering.
What the message actually means
The notice appears in two related situations:
- JavaScript is disabled in your browser. The page detects that scripting is turned off and can't build its content.
- A required part of the site couldn't load. JavaScript may be enabled, but a script, network request, or resource the page depends on failed to arrive.
In both cases the result is the same: the page can't finish loading, so it shows a fallback message rather than the article or support content you were trying to reach.
Common causes
The message itself points to several likely sources:
- Browser settings — JavaScript turned off, or a setting that blocks scripts.
- Browser extensions — add-ons that block scripts, trackers, or page resources.
- Ad blockers — tools that block requests the page needs to function.
- Network issues — a weak, filtered, or interrupted connection that prevents resources from loading.
Any one of these can stop the page from rendering even if the rest of your setup is fine.
How to fix it
Work through these in order, since the simplest cause is the most common:
- Enable JavaScript in your browser. This is the main fix. Check your browser's settings or preferences for a JavaScript or "site permissions" option and make sure scripting is allowed. After changing it, reload support.mozilla.org.
- Check your connection. Confirm you're online and that the network isn't blocking or filtering requests. Try loading another site to see whether the problem is specific to this page.
- Disable ad blockers. Turn off any ad-blocking extension for this site, or pause it entirely, then reload.
- Try another browser. If the page loads in a different browser, the problem is likely a setting or extension in the first one.
- Review your extensions. Disable script- or content-blocking add-ons one at a time to find the one causing the failure.
Quick reference
| Symptom | Likely cause | First thing to try |
|---|---|---|
| "JavaScript is disabled" | Scripting turned off in browser settings | Enable JavaScript, then reload |
| "A required part couldn't load" | Extension, ad blocker, or network blocking a resource | Disable ad blockers, check connection |
| Page fails only in one browser | Browser-specific setting or extension | Try another browser to confirm |
If it still doesn't load
If you've enabled JavaScript, checked your connection, and turned off blockers, and the page still won't load, the issue may be temporary or on the network side. Try again later, switch networks, or use a different browser to narrow down whether the problem is local to your setup.