Firefox Community Forum

I'm using Firefox 115.15.0 ESR with a MAC M2

When I visit jsonviewer.stack.hu and paste data into the viewer I get the following error:

TypeError: netscape.security.PrivilegeManager is undefined

Please type: "about:config" in your address bar. Then filter by "signed". Change the value of "signed.applets.codebase_principal_support" to true. You should then be able to use this feature.

As config is sensitive area of the settings can you guide through this problem with a fix? Thanks bcoleman@sympatico.ca

Version: Firefox 129 Ubuntu/Debian I'm using the Proton theme in Firefox and would like to revert the tabs to their previous, non-floating style. I've tried using the [profile]/chrome/userChrome.css method and enabling toolkit.legacyUserProfileCustomizations.stylesheets, but this hasn't worked. Is there another way to achieve this? Thanks for your help in advance!

Ive been using Firefox as my default browser for quite some time. However, I cant access "Pay Bills" on my bank website. I receive this message "Why can't I access Bill Pay? You might have cookies blocked or cross-site tracking prevented. Depending on what browser you're using, check your settings for these terms: Block third party cookies Cookie tracking Cross-site tracking. Make sure cookies are not blocked and cross-site tracking is enabled. Follow any additional instructions in your browser once you have adjusted these settings." Not sure I know how to do this.... Please help Thanks Carol

I've just upgraded to Ubuntu 24.04 which came with FF 129.0.2. I had a backup of my bookmarks which I imported from an HTML file, and now they're a complete mess. :( When I go to Manage Bookmarks, it shows they were imported in separate folders, in a certain order, but the folders are not showing when I expand the Bookmarks menu, nor do all the bookmarks. In small letters above it says "Recent bookmarks" followed by a mix of bookmarks from different folders; and not all the bookmarks are there. I have no idea how to troubleshoot this

Why Firefox is unable to bring customising options for homepage and toolbar for mobile users in all these years despite other browsers upping their game with user feedbacks and newer browsers bringing exactly what the users want?

Big phones, too many bookmarks, can't remove or hide home button icon on URL bar, no download manager, no options to add home shortcuts or speed dials on Firefox homepage no navigation buttons at bottom, no DNS, is this Firefox in 2024 and 2025?

Secure Connection Failed

An error occurred during a connection to pcc.police.gov.bd. PR_CONNECT_RESET_ERROR

Error code: PR_CONNECT_RESET_ERROR

   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.

Learn more…

How can I allow My Firefox browser to let me through my bank online with ought asking me for a activaction code every time because it says its a unreconognized device I have a desk top windows 7 I check mark its a private device and i register. I also have a mobile app from the same bank without any problems. Thank You!

The bookmarks icons and fonts are too small for my older eyes on my new Ubuntu computer. They are bigger on my older Ubuntu computer. I have tried to find out how to enlarge them without sussex.

I am aware of the Zoom feature for a webpage itself, I am not asking about that. I simply want to have my bookmark toolbar FONTS and ICONS larger.

This has been frustrating. Perhaps including an EASY way to do this for future updates, or an app suggestion that would solve the problem. Thanks for your consideration and (hopefully) help.

FireFox 129.0.2 (64-bit) - This issue persists across updates.

If a YTTV tab is left inactive for a few minutes, the keyboard shortcuts (ex: 'm' to mute) stop working until the page is interacted with again using the mouse (clicking on mute/volume, stop/start the stream etc.) The stream plays normally otherwise.

I'm not sure if this is related to YTTV, Firefox, extensions or Windows (Win 10 Pro)

Extensions: UBlock Origin, Privacy Badger, MalwareBytes Browser Guard, Old Reddit redirect and Reddit Enhancement Suite

15-30 tabs are normally open. Firefox is currently using 2.5Gb memory (32Gb installed).

Privacy Settings are set to custom (image attached).

The interface for Multi-Account Containers has changed. How do I manage the containers. Specifically, how do I create new containers and delete old, unused ones? Put the Manage Containers button back with the old buttons.

I hope my question is self- explanatory.

After a number of years away - I am returning to use Firefox - I believe in it's philosphy - but moving back from Microsoft Edge which is just too commercial, I am seeking to make the changes to my ways of working as few as possible. I use the history page a lot as a memory aid because I have short term memory difficulties caused by neurological develeopmental disability.

I also tend to say more than may be necessary!

Thanks for any responses.