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I've been using MAC (multi-account containers) for a few months. Awesome feature, especially useful for logging into multiple email accounts in the same tenant (M365, GW, etc). In the recent past, if I had an issue with a particular login, I could go to the Firefox Multi-Account Containers extension button on the top bar, click on it...then Manage Containers, select the container to manage, there was a set of options, one of them being "Clear Cookies and Site Data" (or similarly worded). That would clear the data for that MAC which would resolve my issue. Now. that option is no longer shown when clicking the Manage Containers button. I've included a snapshot of what is shown now.

The ability to clear the data for that particular MAC is invaluable. How can I get that back?

MacOS (26.3.1 a). Firefox 150.0 (aarch64)

P.S. I just found the "Report" option on the extension itself in the Extension settings. I will post this message there as well.

LThibx

The Firefox Color extension (which says "Official extension built by Mozilla.") has made it so that when I right click a link and select bookmark link, the menu for choosing which folder to place the bookmark is forced to be dark mode. Due to how few sites I use dark mode on, this sudden reversal of colors makes it hard to read. I tried changing every setting to blue but none of them seemed to effect it. I couldn't find anywhere on the extension page to ask about this without leaving a review so I found my way here. How do I fix this, and if I can't, when is it going to be fixed?

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.

I used Pocket for a while. It was excellent since it allowed taking a webpage and converting it to a document that could be copied and pasted to Microsoft word. This allowed further analysis and work on the contents of the page and was extremely useful.

Now that Pocket is gone is there another extension or a purchased extension that does the same thing on the present day Firefox.

I presently use Windows 7 and Windows 10.

Appreciate any suggestions.

I am attempting to locate the "manage containers" option on the container drop down menu but it is not there. I have read several other threads and have tried cntrl+ about:config "which did not have a false option" clicking right, and then maybe left and every which way I could click, but nothing. The drop down menu does not move so as to reposition and possibly find what I can't find. I do have my scaling pretty high, I wonder if that could be the problem. Any help would be appreciated, you know how we like to change these kinds of options.

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.

I seem to have been using Firefox for so long, that I’ve forgotten some of the basics. I have two Apple systems. An M1, 2020 MacBook Pro and an Intel Mac Mini. Due to issues with the MacBook Pro I needed to reformat it and am slowly adding all my applications. When I added Firefox, logged in and entered the confirmation code and synced my settings none of my extensions appeared in the menu bar (please see the screenshot as to how they appear on the Mac Mini). So the question I have is what do I need to do to get them there on the MacBook Pro.

When I went to https://www.mozilla.org/en-US/products/vpn/ and decided to purchase a Mozilla VPN prepaid annual subscription part of the reason was this "feature"

"Easy Firefox integration with the Mozilla VPN extension (Windows only)"

There is nothing easy when clicking on the download for the Mozilla VPN extension yields a message that the add-on or extension has been blocked. The explanatory link provided is https://support.mozilla.org/en-US/kb/add-ons-cause-issues-are-on-blocklist. That lets you know that:

"When add-ons violate Mozilla’s policies, compromise user safety or privacy, or fail to meet user expectations, Mozilla takes action. This may include disabling add-ons in Firefox to maintain a secure and reliable user experience. "

So, when will Mozilla stop violating Mozilla's policies so that the Mozilla VPN add-on is fit for use on Firefox v 149.0 [without free VPN] running on WIN10 64?

Why are you trying to chase people away, after update i had to reinstall it cause nothing functioned right, now I have to jump through hoops just to install ad Guard. It should not be this difficult to use a website. I think I will move over to chrome where they actually try to make life easier and not more difficult

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.

I've been using alt+a to open new tabs in a multi account container for a long time. Recently that shortcut stopped working possibly with the update to v148 as indicated in this reddit thread.

alt+a is not listed as a shortcut in about:keyboard or in about:addons > manage extension shortcuts or in my ubuntu shortcuts nor in any software I can think of thats running. I've disabled all add-ons except multi account containers and it still does not work. Changing the shortcut to another works fine.

Why would just that shortcut stop working? What else can I do to diagnose the problem?

On Firefox version 140.8 using a MacBook Air, shortcuts for Extensions no longer appear as icons in the toolbar.

Online guidance to get Extension icons back in the Toolbar have failed. One suggested following the jigsaw icon in the toolbar to 'Extensions'. But none of the links under Extensions included the option to 'pin to the toolbar'. Another suggested using the 'Customizing the Toolbar' route. That too included no option to add Extensions.

Anyone know a better fix? Your suggestions are much appreciated!

Hello, Mozilla. I really appreciate the way you think about internet access. What you stated about the app is truly reflected within it: fast connections, accurate results, and most importantly, the security. However, when it comes to advertisements, I was really expecting that whenever I watch YouTube contents, there will be no ads shown. To my surprise, ads are still there. I provided a snapshot of my desktop to give a proof about this. Is there somehow a way to get rid of them, like perhaps an extension to block ads? If there's none, that's fine as well. Thank you and high praise to the developers of this browser.

I have just downloaded NordPass Password Manager. I think I have added an extension for this in Firefox, but I can't tell if it has been successfully added.

I am using Windows 11 Home Version 25H2 OS Build 26200.8037 64 bit operating system

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!