Forum der Gemeinschaft Firefox

When trying to set Firefox to open a file on Windows 11, it is overwritten by Firefox Nightly. I have both branches installed.

This is how it goes when attempting to set Firefox as a default application in my machine:

1. "Apps > Default Apps"
2. .mp4 (for example)
3. click the button below that displays the current default application
4. Firefox Nightly appears in this menu
5. "Choose an app on your PC"
6. "C:\Program Files\Mozilla Firefox" ... "firefox.exe" ... "Open"
7. Firefox Nightly remains in this menu

I cannot get Firefox to appear as an available app in this menu. The only workaround, although inconvenient, is to drag and drop files straight into Firefox.

Any help would be much appreciated. Thanks.

I have set the setting for PDF files to Always Ask. When I select the "Open in Firefox" option from the dialog, it opens the PDF in a new tab in Firefox and ALSO launches Adobe Acrobat and opens there. I have not seen this bizarre behavior before today. How do I fix it?

Hyperlinks keep opening in new windows, not in the same/existing window where they were selected. Issue is not unique to Google Search results and occurring across multiple websites. At wits end trying to figure this one out. I have deselected the "Open links in tabs instead of new windows", turned off all extensions, and uninstalled & reinstalled Firefox. Issue is still occurring. Attached is image of my tab selections showing all turned off.

Hi, I'm Albert.

I had like 10,000 open tabs (not exaggerating) and these tabs are gone after a blue screen error and a few Windows updates. I want to restore those tabs, but I can not because the "Restore the previous session" option is grayed out.

Are there ways to restore these open tabs?

If there isn't one, then I want to restore all the websites I have visited over the past few years and manually filter them.

How do I do it?

The Firefox library contains history but the oldest history it contains is 2024 December one. I guess the dedicated folder removed my old browsing history as it was filled up?

What I read is that places.sqlite file contains all the browsing history. Is this right? My places.sqlite file size is 80.0 MB (83,886,080 bytes). Is there a size limit on this file? I wonder if this file contains all my browsing history.

I have my places.sqlite file and DB Browser installed on my computer. But I don't know what to do next after opening places.sqlite file.

If there are better suited applications for my purpose than DB Browser, please recommend me one with a little instruction.

Long story short, how do I restore my open tabs or browsing history?

Please help me.

After updating to version 149.0, videos on hdrezka.tv do not start after clicking the play button.

Steps to reproduce:

1. Open any video on hdrezka.tv.
2. Click the Play button.

Actual result: The player stays inactive or shows a loading icon.

Expected result: The video should start playing.

Note: I have tested this on version 148.2 and it works perfectly. Upgrading to 149.0 or 150.0 Beta breaks it. Reinstalling 148.2 fixes the issue.

Moderator note: This question has been edited to correct the formatting.

bold textI don't know enough about settings/conflicts to resolve this. I had no problems for years, but this has been an issue for the past six months. AT&T has tried to help, but it just won't work. I have had this email address for almost 40 years, and I really don't want to give it up.

Hello!

I first installed Video Download Helper several weeks ago and it worked fine. However, since the update of 04 March, 2026, it no longer works with YouTube. (It does, however, still work with Instagram.) Having checked all of the settings (which I had/have not changed), I uninstalled it today and then re-installed it. This hasn't helped. With YouTube, the Downloader icon (pinned to toolbar) simply remains grey and does not show any videos when opened. I am using the latest, fully updated version of Firefox with Windows 10.

Can anyone help, please?

Many thanks,

Stuart.

Hello, I am using Linux Mint on a desktop with the latest version of Firefox. Two weeks ago I could login to the Discover website with no problems. Suddenly I can not log in, but get an error message that something is wrong and I can't login. I can login using Chrome on this machine. My wife gets the same message when she tried to login to her account on my computer. After several discussions with Discover, all I get is "it is not our problem."

I am having no problems logging into other accounts with Firefox on this computer.

I have not explicitly changed anything on the browser or computer. I have done some updates which included Firefox. I can login on a different Linux computer using an older version of Firefox. Of course the updates were also to the computer and I will ask the same question to the Linux forum.

I really like Firefox and would hate to have to change to Chrome.

Thanks so much for your help.

Bob Bulfin

Password Manager will not save a URL larger than the first few words (base URL). But the site necessary to login contains more directions after the "xxx.com", and Password Manager truncates everything after the ".com" so it will not return to the proper site to login.

Hi Je suis utilisateur donateur Mozilla et Thunderbird.

Comment vider les mémoires cache automatiquement en quittant MOZILLA sous WIN11 ?

(sans faire Param/Vie privée et sécurité/ Effacer Tout Historique et vérification avec about:cache)

Best regards

I've been using alt+a to open new tabs in a multi account container for a long time. Recently that shortcut stopped working possibly with the update to v148 as indicated in this reddit thread.

alt+a is not listed as a shortcut in about:keyboard or in about:addons > manage extension shortcuts or in my ubuntu shortcuts nor in any software I can think of thats running. I've disabled all add-ons except multi account containers and it still does not work. Changing the shortcut to another works fine.

Why would just that shortcut stop working? What else can I do to diagnose the problem?

Make amazon product video work on firefox. I am using fedora 43 kde plasma recently updated. I have a Nvidia video card RTX 5060 ti and using propriety Nvidia drivers Video starts and then stops or after turning off hardware accelaration ran intermitantly then stops. Sometimes telling me the video file is corrupted

Since the other day blogspot image frames are not displaying correctly (see attached screenshot)

Everything works fine on Chromium...

Name Firefox Version 148.0.2 Build ID 20260309125808 Distribution ID mint-001 Update Channel release-cck-mint User Agent Mozilla/5.0 (X11; Linux x86_64; rv:148.0) Gecko/20100101 Firefox/148.0 OS Linux 6.17.0-19-generic #19~24.04.2-Ubuntu SMP PREEMPT_DYNAMIC Fri Mar 6 23:08:46 UTC 2

Cinnamon is the UI

In an organization that already implements Mozilla Group Policy Templates to enforce various features and settings, how do they set up the Group Policy to disable this new VPN feature organization-wide?

I've checked the existing Group Policy template documentation and can not find any reference to this feature.

Mozilla usually doesn’t restore all the windows I’m working in; when I open it, it only restores a few of them. I usually use the ‘History’ > ‘Recently Closed’ > ‘Reopen All Windows’ option, but this time not all the windows I need are being restored. My most important window, containing 1,000 essential tabs for various articles, hasn’t been restored, and it seems as though I have absolutely no chance of finding it at all; I don’t even have a ‘Restore previous sessions’ button. I don’t know how to get that window back, because restoring the tabs one by one would take an age and I’d probably lose a lot of them (it’s very important that these were tabs, not bookmarks). What should I do?

FireFox browser closed and when I opened it all my bookmarks are gone, all of my history is gone everything is gone as though I never ever used firefox in my life.

I generally get Firefox to save all my logins and passwords. However, I have several websites excepted. Recently, I tried to enter another 'exception' but Firefox isn't registering it i.e. it opens that logon page with all the details, including password, already entered, despite multiple attempts to have it saved as an exception.