Forum d’assistance Firefox

I used to be able to send tabs between my devices, say when I go from my home computer to my laptop. This option seems to have gone missing, like I don't even see the option when I right click on a tab. What happened to this option? Did I somehow disable it? Can it be restored?

I installed Firefox-ESR on my Raspberry PI and noticed that I cannot play Udemy videos. After some research I found that the Widevine plugin is missing and the OpenH264 Video Codec is also not installed. Following the instructions from similar issues didn't solve the problem. I ticked off and on the "Play DRM-controlled content" button but this only brings the widevine plugin for a moment and after that it disappears. In the network tab I see no activity when click on this button, i.e. Firefox does not send requests.

Additionally the OpenH264 Video Codec is not installed and never installs.

Any ideas how to solve this?

I want to open online PDFs in Acrobat. I've modified the setting is in Firefox to "Always ask," yet when I click on a PDF it opens as it should AND Firefox automatically downloads the file to the Downloads folder even though that destination is greyed out in settings and the radial button for "Always Ask" is selected. How can I block this activity in either Firefox or in the registry.

NOTE: ALL OF THE SETTINGS IN FIREFOX SAY "ALWAYS ASK." This a software bug in Firefox, not a user switch setting. This activity began today (March 11, 2022) after months of normal, expected activity. I've reset Firefox and I've done a complete uninstall and clean install and this still happens.

I went into setting and made sure spellcheck is enabled and it is, but there are no other options there. I did exactly what it said on your help article and right clicked in the text box on multiple different web pages and there is NO OPTION. It should not be this complicated.

Before the new update whenever I downloaded a file it would ask where to save the file to every time, now it just asks once then automatically saves any new files I download to the same folder as the previous ones, forcing me to then go to that folder and manually move it to the correct folders. Is there any way to change it back to the right way it was done before they decided to remove our choice? My setting is set to "Always ask you where to save files", with the emphasis on "Always".

My current Theme is Dark Fox. But, previously my backgrounds and menus were all white and easy to read. Now for some reason they're black and difficult for me to deal with.

How do I reset to white and sync them on all my devices?

Just installed Firefox my laptop, but when I try to change my search engine to google I only have Bing and DuckDuckGo as my options. No other search engines appear.

Updating to version 98.0 onwards Firefox has started saving a copy of every pdf file I view (open) in my downloads folder.

My settings have not changed:

Tools->Settings->General->Applications: - pdf (application/download): Always ask - pdf (application/force-download): Always ask - pdf (application/pdf): Use Adobe Acrobat DC - pdf (application/x-download): Always ask

And when the "ask" dialog pops up, I choose "open".

I have tried all standard methods/troubleshooting, including resetting the handlers.json file.

The only way to avoid getting a copy in the downloads folder is if I choose "Open in Firefox" (application/pdf) instead of "Use Adobe Acrobat DC".

Any solution to this?

Thanks Michael

Sorry, posted recently and had then trouble finding out how to respond to help offered (jscher2000)! Noticed that the email version was "no-reply" so I didn't figure that would work! So, I tried to 'cut and paste' my reply (on a smartphone) and I ended up losing even the email reply text so here is a reconstruction. I tried the suggestions in order and the first one didn't have a "Restore previous session" option and the second one had "Recently closed windows" greyed out! And, when I entered "about.support" in the address bar (top rightish), I received a notice that I couldn't reach Google (Remember that I don't currently have internet access on my laptop). So, no joy there either! Can I not just change some current setting to prevent Firefox v 115.9lesr from saving the current 'Windows' and Tabs so that, when I again open Firefox, the previous session 'Windows' and Tabs would be used?!?

Hello there, Iam facing a problem with changing Firefox homepage background. I tried every solution, tutorial, oldposts etc. nothing seems to work, here is what I tried. -1- The chrome folder is in the right folder. -2- the naming of both CSS files userChrome, userContent. -3- enabled CSS files at startup -4- search for both CSS files in the browser toolbox for some reason I cannot find both CSS files, even though they are in the chrome directory. Also, I have 2 chrome folders one of them is located here. "AppData\Roaming\Mozilla\Firefox\Profiles\shaf5qn0.default-release\storage\permanent\chrome" the other one I created myself which is here "AppData\Roaming\Mozilla\Firefox\Profiles\shaf5qn0.default-release\chrome" I tried to delete the first one but I cant, I get an error that this file is being used even though I did close Firefox. What I am missing here?

Offidocs has hijacked my Firefox browser making it impossible to read PDF files. I never added it and it does not appear in my extensions list. I've marked "always ask" in the preferences for opening PDF files but to no avail. My antivirus and Malware bytes scans are negative. How can I get rid of this?

Hi all Firefoxers,

There are a few sites that I always access via a URL that could look like :

https://device.domain.com/admin/

When I went to visit that device, typing in the URL bar "device.domain..." , Firefox's 1st default suggestion shows as https://device.domain.com/

The problem is that I never visited that site, the way to access this device is https://device.domain.com/admin/ - there's no way to reconfigure the device and have an auto-redirect to .../admin location.

https://device.domain.com/ is not in my Browsing History nor do I have an open-tab. In the settings Privacy->Address Bar, disabling "Browsing History" removes https://device.domain.com/ from the suggestion list but it also removes all suggestion from the history. This is the expected behavior, the bug required fix isn't related to this.

If the "Base URL" isn't saved in the Browsing History, how can someone tell Firefox to only suggest absolute entries from the history?

When I use Firefox on my Mac, no matter what I have tried it keeps defaulting to the dreaded Bing Search Engine. I understand it has to do with Microsoft, but I don't use any of their products because I don't like them. In settings/search I can restore the default search engines & delete Bing, but it always reverts back to insisting on using Bing again. I have followed several threads about this issue without permanent resolution. Help??

Does anyone out there know of a replacement for the Tab Groups replacement app? I have not updated Firefox past the v.55 only because I don't think it would work w/ any newer versions. I have found this to be the very best app I have ever used as I need to do a lot of research online and need something that will show all the windows and tabs on one page so I can easily go back and forth to a particular group quickly. Without this, I would have to spend hours finding the info and would only have one window in which to work. Ideally, a replacement would be able to use all the window/tab info I now have. Is there some way I could use this in some sort of legacy mode? I have several legacy apps, but can't readily recall how to do so. I think I tried this w/ the Tab Groups app and it didn't work, but am not certain. Suggestions much appreciated! Thanks, Wolfgang

Until recently, I resisted allowing updates for Firefox because of the announcements of changes to prevent access to some technical kinds of website which I use. These include the public websites of the Paris Observatory which include useul informational ftp pages with important text, data and software files.

  I did recently allow a Firefox update, and now I find that I am cut off from access to these ftp pages. 
  How can I re-enable access to ftp? If it can't be done in the new version of Firefox, how can I return to an older Firefox version that does allow such access?

Dialing a phone number with Google Voice worked before, but now fails. It prompts me to Register for that feature https://voice.google.com/calls?forceBanner=tel-registration but when I click on that link, nothing happens. [See first picture]

Settings | General | Applications seems to show 'tel' is assigned to Google Voice [see second picture] so as per a Google Voice help dialog, I changed it it 'always ask' [third picture]. This did no solve the problem.

How do I stop firefox from automatically downloading files from the internet when I click on them - without even asking me if I want to download them in the first place. In "Applications", selecting "Always Ask" in "Choose how firefox handles files etc" does not work. Firefox never asks. If it cannot be disabled, I will have to stop using Firefox.

I was quite unhappy with the new Firefox Proton design, so I made a CSS file and copied the following code from a website. However, I don't know what to do to (1) slightly reduce the tab height, (2) get back tab borders for inactive tabs and (3) remove the small gaps between tabs. How exactly do I have to change the following code to do so (ideally, for convenience, please just complete the code accordingly)? Thanks in advance for any support!

/*** Tighten up drop-down/context/popup menu spacing (8 Sep 2021) ***/

menupopup:not(.in-menulist) > menuitem, 
menupopup:not(.in-menulist) > menu {
  padding-block: 2px !important; /* reduce to 3px, 2px, 1px or 0px as needed */ 
  min-height: unset !important; /* v92.0 - for padding below 4px */
}
:root {
  --arrowpanel-menuitem-padding: 4px 8px !important;
}

/*** Proton Tabs Tweaks ***/

/* Adjust tab corner shape, optionally remove space below tabs */

#tabbrowser-tabs {
    --user-tab-rounding: 6px;
}

.tab-background {
    border-radius: var(--user-tab-rounding) var(--user-tab-rounding) 0px 0px !important;
    margin-block: 1px 0 !important;
}
#scrollbutton-up, #scrollbutton-down { /* 6/10/2021 */
    border-top-width: 1px !important;
    border-bottom-width: 0 !important;
}
/* Container color bar visibility */
.tabbrowser-tab[usercontextid] > .tab-stack > .tab-background > .tab-context-line {
    margin: 0px max(calc(var(--user-tab-rounding) - 3px), 0px) !important;
}