Diễn đàn hỗ trợ Firefox

How do I remove the pop up blocker on Firefox for certain websites? I am doing an online course and each introduction for each chapter has a short video that pops up but as soon as that happens Firefox sends a "Critical error" message then the video stops so I thinks that's happening because pop up blocker is turned on and I just dont know how to turn pop up blocker off for specific websites only like this one I am using for my study course. How can I turn the pop up blocker just for this one website so that this doesn't keep happening?

A few days ago my saved passwords all disappeared. I have been logging in manually and when I do Firefox asks if I want to save the password and I click yes. The password then shows up in the saved Passwords. But... in a day or so it disappears again. What's going on? I have not changed any settings.

As of 12/9/25, Firefox seems to now prevent Theme add-ons from working if there is a contrast setting configured in Windows configuration. (Version 146.0) Previously, this allowed a very aesthetically pleasing view. I would greatly enjoy having that option again. Thank you.

Trying to download 3.3 GB file. Around 500-600 MB download then fails and displays either, "pause" (permanent) or "failed - cachefly.net". Have tried several times over several days w/o success.

WHAT CAN I DO IF THIS MESSAGE APPEAR WILL SYNCING MY ACCOUNT AND OPENING IT :Sorry. We’ve locked your account. The confirmation email we sent to ⁨enta3ommry@gmail.com⁩ was returned and we’ve locked your account to protect your ⁨Firefox⁩ data.

If this is a valid email address, and we can help unlock your account.

After a few days of having no internet connection, my account was disconnected from my PC and saved passwords disappeared. After signing in to my account again and syncing, lost passwords were not recovered. I need help to recover them.

I tried logging into my account on a website. I decided to click on the passkey option to log in. Firefox had ask to access my passkeys and I mistakenly declined. But the pop-up doesn't happen again. It goes straight to "authentication failed" without trying to ask me again to access the passkeys. I don't see any setting for this in the settings page.

How do I change the permission to let Firefox access my passkeys? Or how do I make Firefox and Windows ask for my permission again?u I'd like to not have to reinstall Firefox if I could.

Also McAffee notification with all these popups stating that my McAffee protection expired yesterday - I have never had a McAffee notification for a virus or pair for protection from them. Popups are happening every 10 seconds continuously! looks like about 20 or more popups describing different problems with 20 digit numbers and letters as a serial number of the problem!

I read online that Firefox is planning on implementing AI features. Given the track record of AI in other browsers leaking private information, bogging down connectivity, and generally being a nuisance towards users, I was wondering if there will be opt out features in future updates? Or know of forum threads that will update with tutorials on how to turn off AI features?

If not, does anyone on this forum have recommendations for no-ai browsers?

Reposting until I get help from someone. Windows/desktop. On Google Chrome, any streaming website I used with autoplay enabled would KEEP full screen mode ON after changing episodes. It would automatically go to a new page with the following episode and remain full screen. Why doesn't Firefox have this feature?? I'm seriously considering going back to Google Chrome for this one small feature. Every time I had any streaming service playing with autoplay enabled, I didn't have to manually select the full screen option every time. I am having to stand up and manually click full screen function. Every. Single. Time. Somebody please help me if there's a way to active that function.

In version 146.0.1, or perhaps even earlier, I noticed that if you set a Primary Password to log in to the browser, you can reset it and log in simply by clicking the "Cancel" button. This allows you to access all of your user tabs and links. I hadn't noticed this before. It defeats the purpose of setting a Primary Password. I noticed similar issues in the Tor browser, but you can't set a Primary Password there at all, even though the feature is there, and it's built on the Fire Fox engine. Please fix this issue. No buttons should allow you to log in without entering the correct Primary Password.

I have a warning underneath my bookmark ribbon that says, "The security sandbox is disabled. Your configuration is unsupported and less secure." What is the security sandbox and what configuration is needed so that it supports the security sandbox. What happens if this security sandbox is disabled while I'm running Firefox?

I'm running Firefox v146.0.1

An error occurred during a connection to portal.esic.gov.in. SSL received a record that exceeded the maximum permissible length.

Error code: SSL_ERROR_RX_RECORD_TOO_LONG

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem.

In my Firefox browser, when i try to sign in to Youtube, a window says "there was an issue signing in to Youtube" pops up. None of the troubleshooting articles are helpful for my situation. My Firefox browser is up to the latest update - version 146 on windows 11. Youtube works, but i am prevented from signing in to my account.

I have used Youtube in Firefox before by signing in to my google account, the only thing that has changed was that I went into settings and cleared my browsing history, cache, and cookies. Once those were cleared, Youtube won't sign me in and only shows that error window.

In my Firefox browser settings, I have set Youtube to accept cookies and have disabled adblock for Youtube.

My Youtube account is still accessible using Chrome, but not in Firefox. Youtube WILL sign me in if i use Firefox private browsing. I'd rather not use chrome since Firefox is my primary browser and I'd rather not jump through the extra steps of google sign-in using private browsing.

I do have a Google account with my school institution, but that has never been an issue (expect it won't open google maps for some reason, not the issue here though). My Youtube has always been signed in with my personal Gmail, not my school Gmail. I'm not sure if that's interfering with anything.

To reinstate the main issue: I cleared my browsing data and cookies, now Youtube in Firefox won't sign me in.