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this used to work (like last week) Upgraded macos. Mozilla. please fix

command shift ~ (to switch firefox windows) does not work with FF 148.0.2 (aarch64), MACOS 26.3.1 (25D2128)

Hello, I accidentally clicked on a new toggle button and it opened a Google sidebar. I also now do not have the ability to have multiple tabs open on the same browser. If I clcik on command-T (Mac), the screen goes dark. What happened? Can I get my old system back, without this Google sidebar?

I need to install PKCS#11 modul on iMac (OS: Ventura 13.7.4) for signature authorization. I try: Settings-> Privacy and Security-> Certificates-> Security devices-> Load-> Modul filename: /Applications/CertiliaMiddleware.app/Contents/pkcs11/libCertiliaPkcs11.dylib , but I get an answer: "Unable to add modul". In order to install a certificate for signing with a card, I was informed that I need to install this modul first, but it doesn't work. What should I do? Thanks, Martina

Several extensions were recently deleted without my input. Among them were Duck Duck Go Privacy Essentials, Keeper Password Manager, and Apple's iCloud Password autofill. I know there were others, but I cannot even recall which ones they were. Not sure if this happened after the most recent update or later, but it happened at some point in the last 24 hours given that today is 3-15-2026 12:30 pm PST. I only discovered this when a tab popped up in Firefox asking me to complete a survey as to why I uninstalled Duck Duck Go Privacy Essentials, which in fact I NEVER did. See attached pic. Nor did I uninstall any of the aforementioned, et. al. Thanks Mozilla for f'ing up my settings and overall browsing experience across all of my devices without my consent.

When I try to go into my google account for any reason and a few other websites, it will say use passkey or try another way. I have done both several times and Firefox ALWAYS FREEZES and I have to force quit. I have reinstalled Firefox, gotten rid of all cookies and cache, gotten rid of extensions and everything I could do from the help website but nothing seems to work. I have also reinstalled Firefox but the same thing keeps happening. I need HELP!

Description: I need help with the "Firefox Multi-Account Containers" extension.

The extension is installed and shows as "enabled" in my Add-ons Manager. However, the colorful container icon does NOT appear on my toolbar, so I cannot access or use the extension at all.

What I have already tried (none worked):

· Dragging the extension icon from the puzzle menu to the toolbar · Right-clicking on the extension icon (inside the puzzle menu) to see if there is a "Pin to Toolbar" option — but the option does NOT appear at all · Restarting Firefox multiple times · Restarting my computer · Creating a new profile in about:profiles and testing the extension there — still no icon · Disabling and re-enabling the extension

The extension is installed and enabled, but without the toolbar icon, I cannot create containers or separate my Gmail accounts. I really need this feature.

I have read that this might be a bug in recent Firefox versions. Is there a known fix? Do I need to completely uninstall Firefox and reinstall it? If so, could you please guide me on how to do a clean uninstall (removing all profile folders and registry entries) and then install the latest version?

My system is Windows (older version, if that matters).

Thank you very much for any help!

when I hit full screen in the lower left on youtube videos it says full screen unavailable on all videos. I have tried all the recommended setting adjustments in the config and they don't work. yet full screen for youtube videos works in all other browsers on my mac which is an M2 pro macbook pro running sequioa 15.7.4

Please fix this as it is really annoying and I may stop using this browser if it is not taken care of. It just started yesteday out of nowhere. No changes were made on my computer during this time.

This must be a setting in Firefox somewhere relating to Tabs, so I will continue to investigate, but... I feel like I could always click an email link I had received and it would open my preferred browser, in my case Firefox Mac OS latest (both) on a last Intel Macbook Pro. Now, a link click opens Firefox but only to the last page I was on, and I again need to click the email link to get the new tab to open. Why/where/help please?!

I have two separate Firefox accounts, with separate emails to log in and their own sets of bookmarks, passwords, etc. I want to merge all the data from both of those into a single profile of a single account under just one of the emails.

I'm pretty sure I've done this before, by: 1. Logging into account A and syncing. 2. Logging out of account A without deleting data. 3. Logging into account B and syncing. With the result that account B now contains all its original data plus all the data from account A.

But when I just tried to do this process now, at the point of logging in to account B I got the error "Account limit reached for this profile. This profile was previously synced to a different account. To keep your data organised and secure, each Firefox profile can only be synchronised to one account. To sign in using [account B], create a new profile."

I don't want to have separate profiles with the data from accounts A and B, I want it all merged into the same profile. How can I achieve this?

I don't see the suggestions when I'm typing. It was the most visited site by me and firefox was autofilling it. Now I can see there's nothing in my history like it is the first time I use firefox. I haven't changed anything in firefox settings or system files etc. It's just got deleted. I'm a MAC user

Hi,

I use Firefox app in macos, android and ipados. The bookmarks across them are not synching automatically. I need to press sync manuelly to do. All apps are updated, all settings look fine. Please help me synch bookmarks across platforms. Thanks a lot.

Although the option to "Delete cookies and site data when Firefox is closed" is unchecked in my settings, I am still getting logged out of all websites when Firefox restarts. This was never the case when I used Safari, and it's quite inconvenient to have to log in to so many websites all over again, especially when two factor authentication is required for many of them.

Is there anything that might be causing this, anything I can check or do on my end so that I am staying logged in on restart? Thank you.

Hi,

I am concerned that when I signed into my bank account today, the saved username which is autofilled by Firefox had been changed. The change was subtle -- from uppercase to lowercase letters -- but it wasn't me that changed it. This is a site I log in to often, almost every day.

Of course I am worried that this is some sort of hack.