Firefox Community Forum

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.

Topic is Extensions. How do we get an extension to be recommended by Mozilla? Maybe we can upvote to do this.

"Gmail Conversation Reversal" - likely the first one with the most reviews and most recently updated. SS attached.

Thanx

Hi everyone,

I recently built a small Firefox extension for my website https://calcolo-stpendionetto.it https://calcolo-stpendionetto.it , which helps users calculate their net salary in Italy using updated IRPEF and INPS rates.

However, when I try to upload the extension to addons.mozilla.org addons.mozilla.org (AMO), I keep getting this error message: Signing is not possible due to an error with the manifest file

{

 "manifest_version": 2,
 "name": "Calcolo Stipendio Netto",
 "version": "1.0",
 "description": "Calculate your Italian net salary (IRPEF, INPS, regional tax) quickly.",
 "icons": {
   "48": "icons/icon48.png",
   "128": "icons/icon128.png"
 },
 "browser_action": {
   "default_popup": "popup.html"
 },
 "permissions": ["activeTab"]

} I also tried switching to manifest_version 3, but then Firefox gave a warning that some properties like browser_action are deprecated or not recognized.

Has anyone experienced the same issue when uploading finance or calculator-related extensions? Is there a new manifest format or signing rule I might be missing for Firefox extensions?

Any help or examples from working extensions would be greatly appreciated. Marien Klin

Is anyone monitoring this community? Has it been abandoned?

I've been having an ongoing problem. I fixed it myself, because after posting here, I had zero responses and didn't know what to do, so I messed around and tried things on my own, which seemed to fix it. But apparently, it is not fixed, and I still don't know what to do. A Firefox expert I am not.

Very simply, I use two different computers, each 2000+ miles apart. Each time, and this has worked for well over 3 years now, the entire computer is copied to a backup. The backup data is restored, the current Firefox profile, as well as the Firefox program. To repeat, this has worked for well over 3 years now.

In order to get the extensions working, that requires disabling and then reenabling each one. (Otherwise, Firefox will not access the internet.)

This time, the extensions were disabled and enabled, and everything appeared to be working fine, but nope, not a single extension works. Even choosing a different extension that is normally disabled doesn't work.

I used to use Adaware, which is on the disabled list, so I disabled the non-working Ublock Origin and enabled Adaware, and it doesn't do anything. The ads roam freely all over the page. They pop up and dance around.

Not one extension will work. New, old, enabled, disabled, whatever. Nothing.

Does it bear repeating that I am not a Firefox expert? Without an answer from someone who knows what they're doing, I may as well switch to crap, inferior Edge with the zillions of dancing, pop-up ads. And I hate Edge.

I'm begging for an expert to help here.

Shortly after upgrading FireFox, whenever I try to go to a website, like PayPal or my bank or anything else, I immediately get a large Ad/site for something frequently related somehow.

Like my bank I will get something suggesting an online bank, or ways to make banking easier. It will be a large window, covering my original window. I have to exit THAT site to get to the one I want.

It is a separate window, I cannot just X it out, I must shut down that window. Then the window that I actually want will be beneath it.

I can't figure out how to fix it.

Macbook Air, Sonoma 14.6.1 Firefox up to date

Moderator note: This question has been edited to correct the formatting.

the last update disabled my group speed dial that had hundreds of saved research bookmarks. How do I go back to the previous version and restore my group speed dial bookmarks? The update should have warned that this extension would be disabled. This is a disaster!

I have just had to replace my PC following a bit of a disaster with my old one. The new PC has Windows 11. As usual I downloaded Firefox as I always use this. Somewhere in the installation of Firefox I must have been asked about blocking ads, but I don't remember. Now all ads are blocked, which I don't mind, but some sites are asking me to disable my ad-blocker if I want to use their site. Mostly I don't but there is one I need to use, so I would like to add that site as an exception, but I cannot find any mention of any ad-blocker in settings. Where do I find this? and how do I add exceptions?

The only add-on that I have in Firefox is the 'Privacy Badger' which could be the problem I suppose, but I can't see the website listed in the ones Privacy Badger is blocking.

Any help would be appreciated

I'm away at another location for a few months out of the year. The computer in the other location is almost identical to this one, done in a very simple manner, by using a backup and then reinstalling everything from previous computer to current, most of which is data.

The Firefox profile is copied over and then the version of the program from that other computer is copied, so the profile and program match. The last step is to disable each add-on individually, then to immediately enable them again. (Otherwise, the browser won't connect to the internet.)

I followed the same procedure today as every single time. But then I noticed the blank new tab add-on isn't working. And upon looking at the add-ons...none of the enabled ones are listed (or working). Only the disabled and recommended ones. I don't even know which were installed, and would have a hell of a time figuring out which ones are supposed to be there, and how they're set up.

Where did they go, and how can they be reinstated?

This has never happened before, and I've been doing this same thing for at least 3 years.

Thanks in advance.

I know that there is already default containers built-in without the need of the extension. But there's no way to open tabs in containers when we click a link, only when it's typed in. There's an option in settings that allow to pick a container when a new tab is opened, but that's it. It would also be great to move the Mozilla VPN and integration and sync function from the extension to the settings page for easier access.

bold text simple question - i want to add Grok to the AI sidebar options... why doesnt the Grok addon work any longer Im using the latest firefox as my default browser

I am running Firefox 148.0 and Thunderbird 148.0. I am in the process of moving everything to a new (to me) computer that will run Windows 11. When I start Firefox from the start menu or the taskbar everything runs as expected. I have the Adblock Plus extension plus several others running. If I click on a Hyperlink in a email in Thunderbird instead of opening in a new tab into the currently open copy of Firefox as it did on my old computer running Windows 10 it opens in a new window with no extensions. I am assuming that I have something set incorrectly. Any help as to where I should look to fix this issue would be greatly appreciated.

Unable to identify/locate the controls (Settings??) necessary to inhibit/deselect/delete un-commanded popups/assist/help boxes that cover over parts of the underlying informational/data dense page

Since Firefox updated to version 148.0 it has broken my ability to download any extension and I get that Installation aborted message for any extension I try to download.

It also broke my ad blocker, ublock origin, when it updated to 148.0

The extensions I use are: Adblock Plus Ghostery Privacy Badger Privacy Possum uBlock Origin

Which one of these add ons offered encryption? Is this something I can uninstall? Not all attachments are encrypted, but some are. Thanks JM