Firefox Support Forum

When I restarted my PC and opened Firefox only 1 tab Open previous windows and tabs. All the other 6 disappeared. I opened 3 additional tabs, closed Firefox, and reopened Firefox and only the one same tab was there from the previous session. Why does the feature not work properly?

Firefox 126 has changed the tabbar tab background handling and I cannot find a way to get my graphical tab background back for the selected tab. The left image shows FF 125.3; the left 126.0, which installed itself yesterday. In the userchrome for the old Firefox I have:

    #TabsToolbar:not(:-moz-lwtheme) .tabbrowser-tab .tab-content
 {
   background-image: url("file:///D:/System Graphics/Toolbar Backgrounds/rgsweeve - 000.bmp") !important;
 }
  #TabsToolbar:not(:-moz-lwtheme) .tabbrowser-tab .tab-content[selected="true"]
 {
   background-image: url("file:///D:/System Graphics/Toolbar Backgrounds/rgsweeve - 040.bmp") !important;
 }

This gave me the differentiated selected and unselected tabs but does not work for the selected tab in the new Firefox. Any ideas how I have to specify this now?

[I am making this post using the older version of Firefox. If I get some suggestions I'll reinstall the newer version (actually turn auto update back on) and try them out. Thanks.]

Hello dear community,

I have a program that continuously monitors the download folder under Windows 11 for a specific file and retrieves it. I download this file in Firefox, but the said program gives an error.

I have noticed that when files are downloaded in FireFox, they already appear in the Downloads folder with the corresponding file extension with 0 bytes and these are then apparently swapped or merged with the .parts file.

The problem is that the mentioned program now tries to retrieve the unfinished file, which then leads to an error.

Does anyone know if it is possible to customize Firefox so that the file only appears in the download folder when the download is fully complete?

Many thanks for your help :D

I'm switching to Firefox from Vivaldi since adblocking on YouTube no longer works on Chromium-based browsers, and Google is determined to annoy me even outside of Chrome (they also forced their material design context menus on everything else based on Chromium). However, I'm finding I'm missing the reading list functionality immediately. It has become a basic part of how I browse, and I attempted to use Pocket, but I'm finding that I hate how Pocket works compared to Vivaldi's reading list. Does anyone know of a good extension that emulates how Chromium-based browsers have their reading list, including working with sync so I can pass links between devices?

After the latest update (Monday) my Lastpass extension icon disappeared from the extension toolbar. It was still listed in the Add-ons and themes page. How do I get it visible again? I've tried to right click the Lasspass icon but "pin it" does not appear. I've deleted the extension, rebooted and reinstalled with no difference.

Hello, all the sudden, news site comments don't show and after research here I learned it might be enhanced protection tracking settings. I tried all the settings and nothing seems to work well (not tech savvy). Strict = user comments blocked and all the other settings allow so many ads they cover content and/or there are a hundred on a page. On a desktop. Any suggestions would be appreciated. Thank you very much.

I have tried multiple Firefox Extensions for saving images instead of using the default Right-click "Image Save as" function, so reduce steps. All of the extensions have the same issue. When the filename already exists, there is no failure but instead a (1) is appended to the end of the file name. No message/prompt either to skip/cancel. It just silently appends. And (2) (3) and so on.

Is this a limitation of the Firefox WebExtensions API? Is it not possible to return a verbose failure for existing filenames?

I have search and have seen screen shots. But not actually how to do it. In firefox the Application Menu "the three lines or the Hamburger." How do you move it to the Left side of the screen instead on the default location on the top right. Also please correct me if this is not possible. And thank you in advance. I am on the latest version and currently using windows 10.

I want firefox to not only cache the URL and page title, but also cache the page contents, so that if I do a URL bar search for a word that was only contained in a page that a visited (not in the title or url) firefox finds it. Apparently chrome already does this. Why doesn't firefox? I can't even find a add-on that does this for firefox.

whenever i close a single open tab, firefox closes and i have to reopen it to my home page. In the past i could actually revert back to my home page after closing tabs. And then can only close down firefox by hitting the top right X. Unfortunately i have forgotten what i did last time, so any help would be appreciated Ta Doug G

Currently, when I try and open downloaded .txt files and .log files (that is, when I click on them directly from the download pop-up that appears at the top-right of the browser), Firefox inexplicably opens Aegisub on my machine as the app to use. This is in contrast to when I open it directly from within my file browser, where it opens the Kate text editor, as suggested by the default app option in the permissions of the filetype.

How do I change the apps Firefox uses to open downloaded files? I've tried going into my settings and looking at applications, but .txt and .log don't appear, so I'm not quite sure what to do.

I'm on Kubuntu 22.04.3 LTS, using the Firefox deb package.

OPEN PREVIOUS WINDOWS AND TABS is unchecked but upon startup firefox always tries to do this and I get an error message. Computer crashes, shutoffs, sleep mode and Firefox wants to go to my previous windows and tabs : I HAVE IT UNCHECKED FOR A REASON, I DON'T WANT TO GO TO PREVIOUS TABS.

Hello, How can we disable QUIC with the latest ADMX or via registry entry on Windows 10. I see not settings under ADMX that can assist in doing so. I dont mind implementing a registry entry in GPO as well.

Thanks