Diễn đàn hỗ trợ Firefox

On last Firefox update my Password manager was blanked out. I had no username/passwords in my Password Manager although I had previously had over 100. I managed to recover it by logging in to my Mozilla account but now have access to over 7000 of other peoples usernames and passwords on my password manager. You seem to have a major data breech or is this a quirk I don't understand? These other names/passwords show up when I try to log into certain sites, such as Schwab for example, and I have to pick mine out of a host of others to fill in the login info. What is going on?

When I click on the star icon in the address bar the star icon is filled in, and existing bookmarks show with the filled-in star icon. But I no longer get a dropdown where I can edit, tag, or delete an existing bookmark, and URLs I click on don't show up in Recently Bookmarked so they haven't been added.

The places.sqlite file in my profile is not read-only, and I restarted Firefox (stupidly, before I took a screenshot of the pinned shortcuts on my new tabs page) and that made no difference.

Thanks in advance for any help!

Hi,

I searched the web for deleting the item "Weitere Lesezeichen" in the sidebar. I found only solutions for the firefox 85. In Firefox 85 should be a field for hiding this. Although in Firefox 150 it can`t be hided or deleted. I don`t need and I don`t want this "Weitere Lesezeichen". Any solutions?

when visiting websites using my vpn firefox blocks my entry. I have to disconnect my vpn to allow entry to sites. ive tries numerous fixes and nothing works its frustrating.

I am on a new PC with Windows 11, using 4 monitors. I keep trying to figure out what is making my mouse and sometimes the keyboard behave sluggish (freezes for a moment). I have takes all suggestions that AI has suggested but it is still happening. Do you have any thing for me to try? It appears to be only when Firefox is running.

This has happened randomly on several different computers, both windows and ubuntu linux. It just now happened on my Win 11 computer. Was viewing the CNN news site and FF suddenly closed, without a "FF crashed..." message.When I clicked the icon to reopen it, it came up with the home page group of tabs instead of reopening the windows and tabs that were opened when it crashed. Worse, none of the previous months of history shows up and recently closed tabs and windows are both greyed out.

Is there a way of recovering the history of what I was working on at the time of the crash and what the hell is causing this? I am close to dumping FF and going with something else as this is highly annoying.

I use Firefox to manage an online course. For some parts, I want to zoom in to see detailed diagrams etc. In other parts, I want to see at a glance a simple list of submissions. So I have 2 windows (with their relevant tabs) open. But when I zoom into the first, the other window zooms in, so I lose most of the listing. How do I set the zoom differently in the two windows?

Firefox continually shows pop ups for a passkey and it will not let me sign into a webpage without it. I have seen a way to disable the pop ups online, but I am 84 and not techy. If I cannot stop them, I will stop using Firefox and Use

Hello! Please report this bug to the developers. When I first launch Firefox after turning on my computer, the window title bar and buttons in the upper right corner (like "Minimize," "Minimize to Window," and "Close") sometimes disappear. If I minimize the browser via the bottom taskbar and then restore it, these buttons and the title bar appear. I'm using Windows 10 x64, with a screen resolution of 2560x1440 (scaled to 125%, but I don't think this has anything to do with the scale or resolution, as other browsers (Opera, Edge) don't have these title bar issues).

See screenshots at the links: https://imgur.com/a/Hbc9yvE (There are two screenshots: 1 - with the window title and buttons (as it should be), 2 - when the window title and buttons disappear)

I've noticed that if I let Windows sit for a while after turning on the PC (2-3 minutes) and then launch Firefox, the problem with the disappearing title bar and buttons seems to disappear. Apparently, Firefox doesn't have time to load properly after Windows loads, and if I launch Firefox almost immediately after Windows loads, the problem described above occurs. And when the OS sits for 2-3 minutes, Firefox apparently loads all its services and processes normally and then works normally, without this error. Firefox ver.: 150.0.3.

This bug was also discussed on the forum by some other users, and they are also experiencing this bug: https://forum.mozilla-russia.org/viewtopic.php?pid=818805

I have about 19 jillion saved addresses in autofill. I know how to delete individual addresses, but I'd like to know if there's a way to select multiple entries or to delete all of them in a single operation.

Firefox for Linux Mint mint-001-01 150.0.3 64 bit Issues with login on ups.com When I press on the Login radio button I get this:

Access Denied You don't have permission to access "http://www.ups.com/lasso/login?" on this server. Reference #18.e86ac917.1779017770.661111b8 https://errors.edgesuite.net/18.e86ac917.1779017770.661111b8

Works in all other browsers on same system, Chromium, Brave, Opera, etc Works on Windows 150.0.3 64 bit Cleared cache,cookies, disabled all extensions, disabled advanced tracking protection, every suggestion I could scrape the internet for. Ran Firefox logger and it found a 403 error. Any suggestions? about to nuke and reinstall

I'm reposting a question already opened here because a moderator suggested to do so. Actually I though I was posting to the international forum from the URL...

I was trying to access a local HTTPS website of an embedded device (a Siemens S7-1500 PLC) that is using a self-signed certificate, but was unable to go on (attached image #1, in Italian language) due to the the SEC_ERROR_REUSED_ISSUER_AND_SERIAL error. I've browsed a similar PLC webserver in the past, so the fact that the device exposes a similar certificate serial number is not so strange for me, considering also it's self-signed.

The problem is that I cannot follow the instructions of the Mozilla knowledgebase here because I'm not able to identify the correct certificate of the website!

In the attached image #2 you can see that the connection is detected as not encrypted, I suppose because only the form part of the HTML that is posting the data using HTTPS while the rest is using HTTP, but I'm not sure. If I click on the padlock icon (attached image #3) the info about the current certificate is not displayed.

Then I went into Tools > Options and searched for "certificates"; as you can see in the attached images #4 and #5, neither in the Servers tab nor in the Authorities tab I can find any item that is related to 192.168.10.2 (the webserver IP address) or Siemens (the embedded device manufacturer). But unfortunately the error persist! Initially there was a 192.168.10.2:443 line in the Servers tab and I removed it and restarted Firefox, but it didn't solve, so at the moment the situation is the one depicted by the attachments.

I had to use Microsoft Edge to access the website, but I would like to solve this issue and use Firefox instead. Is there anything else I can do to bypass the error? Why doesn't the error page provide a way to correctly identify the wrong certificate using its fingerprint and/or name? Or, maybe, is there a way to disable this check for local IP addresses or for items in a whitelist?

Thanks for your help.

I like the Firefox home page. Except for one small issue. That is Shortcuts. If checked it defaults to "sites you save or visit". It is a pain in the A$$ to clear away visited sites. I would prefer to have the option to keep saved sites and not keep visited sites. Can Firefox please seperate saved and visited. In another words make it an option to keep visited sites.

How can I upgrade to windows 11 or is it to late? Can't connect to internet. Everything else is house is fine. Says Firefox disconnected. I can't sign in on laptop, says windows 10 support expired 10/2025?