Diễn đàn hỗ trợ Firefox

Hello!

I first installed Video Download Helper several weeks ago and it worked fine. However, since the update of 04 March, 2026, it no longer works with YouTube. (It does, however, still work with Instagram.) Having checked all of the settings (which I had/have not changed), I uninstalled it today and then re-installed it. This hasn't helped. With YouTube, the Downloader icon (pinned to toolbar) simply remains grey and does not show any videos when opened. I am using the latest, fully updated version of Firefox with Windows 10.

Can anyone help, please?

Many thanks,

Stuart.

Why has Video Download Helper v9 by Michel Guteriezze been replaced by Video Download Helper by vdh? The original versions were perfect. The VDH version 10 vdh is straight junk!

With Firefox's latest update...

1. Javascript no longer works on pages it absolutely must work. The webpage for my security cameras not longer allow me to operate the cameras. When I click pan/tilt/zoom button all I get is a little message that says "Jacascript" at the bottom right corner where there should be a url. I've never actually paid attention on the security cams page but the url is there on other websites. I have to have this functionality. How do I re-enable Javascript for at least this page?

2. Deactivated extensions are not actually deactivated. To trouble shoot the first problem I disabled NoScript and ADblock Plus to see if they were interfering. I closed and reopened Firefox, and even restarted my PC. Firefox shows the extension to be disabled but they are in fact still active and working. Something is extremely broken in Firefox's extension manager. Is there anyway to actually disable these extensions without removing them?

Thanks

I am a member of Nielsen Computer App. Why did Firefox quit allowing me to use/add this extension?? I guess if this is going to be a problem I will uninstall Firefox AGAIN and go with Chrome. I really like Firefox, but this is so upsetting that I cannot add the Nielsen Extension like before.

Wie kann ich grok.com als Chatbot in den Firefox einbinden?

How can I install grok.com as a KI-chatbot in firefox?

So I am running 31 add-ons. 30 of them ARE ACTIVE. (I've ALREADY ACTIVATED THEM.) Only 8 are showing up on the tool bar. I would like to select ONE that is not showing up for use. I have double, triple and quadruple checked, it is active...but it does not show up on that toolbar. I WOULD say that it is because there is not enough room, but there IS enough room for at least 3 others to be showing up. I can remember a day when there was 12 of them showing, and I had an arrow to select to see the "hidden" add-ons. That is not present. I cannot find a way to "show all"... unless it is just going to the install center to see that they are BOTH installed AND active. (Well, one is not active, but that is for a reason, and it's not the one that I want to use at this time.) While typing this, I tried something, I right clicked on the toolbar and selected customize, and I SEE the old familiar >> but it is grayed out. Once I click on "done" it disappears again. It is that ">>" that is missing. Yes, it's called "The overflow menu"... THAT is what is missing! How do I get that back?

Hello. I developed an addon to delete multiple reddit posts. It's built with the help of claude but regularly passes ReferenceError: browser is not defined

I'm adding the 3 files for the overview. Does firefox need some sort of API? https://storage.to/c/IXAJT4jqn

I have added the "Firefox Multi-Account Containers." I see the container icon, indicating it is "contained."

I have clicked manage containers and created separate containers like news for instance. I switch between personal, news, shopping and used each supposedly separate container.

But, I see the same history in each, which is not what I expected. Do I need a different Firefox account for each container?

Is there any addon or feature within addons management icon (from toolbar) to Disable Extensions and Apps in one-click like Chrome has via this addon?

https://chromewebstore.google.com/detail/disable-extensions-and-ap/abmoaeegegigmhgfmdmlhkoghibgkpkj

https://browsernative.com/disable-chrome-extensions-apps/

I am the developer of FastF1, an open source Python package for downloading and analyzing Formula 1 race results, timing data and telemetry. The package is widely used in the fan community for independent analysis of results. For some advanced features, the addon requires users to authenticate with their Formula1/F1TV account. Since their services don't have an open login API, a companion addon is required to allow users to sign in using their browser and the official website.

I have just noticed that my developer account has been banned and the addon was blocked in Firefox. I have not received any email about this and don't know why exactly this decision was made. I'd like appeal this and reinstate my account and the addon, but I don't know how to proceed from here.

FastF1 and the companion addon are fully open source and intend no harm to users. https://github.com/theOehrly/Fast-F1 https://github.com/theOehrly/fastf1-companion

I hope this problem can be resolved.

If I use extension 'Block Site' (shows up as a stop-sign shaped icon with a 'W' on it) to block a site, when I try to unblock it, it fails, with the below message:

"This operation cannot be performed in incognito mode. Please open the page in a regular browsing window and try again."

I am just clicking on the (whichever) site, from a search - not opening a private window... This extension used to work fine.

I did install DuckDuckGo browser, but removed it, as it was more trouble than it was worth. I would have to reboot my PC after each use before FireFox would connect.

As usual on forums, none of the subject choices exactly fit my situation/problem, so I apologize for any unintended misdirection.

How do I uninstall Privacy Badger. It's been disabled, but not uninstalled. Please be specific as to keystrokes, screens, boxes, location of item. Many instructions tend to overuse computer jargon or common industry synonyms used daily within their sphere, which a laymen cannot easily translate, and often raise more questions than they answer. Installed on my Firefox browser. Thank you in advance.

I'm using Firefox v126. I'm searching through the add-ons trying to find a few that I like and most don't work with my older version of Firefox. So I click into the version history of the add-on and find an older version of the add-on that will work with the version of Firefox I am running. Except... I click it and I get:

"The add-on downloaded from this site could not be installed because it appears to be corrupt."

say what? ok maybe a fluke, so I click on through, older version, older version, still old version. All give me the same error. Okay, maybe its just the add-on, no, its literally any older version of any add-on.

No way all those versions of add-ons are "corrupt." I can download the .xpi, rename to .zip and view the contents. Anyone run into this particular problem before and if so, how did you fix it? I'm keen to keep v126 of Firefox and would like to use the add-ons that I like to work with it.