Diễn đàn hỗ trợ Firefox

I completely removed a program from my computer several days ago. The program name still shows in Firefox, settings, general, applications. The program is showing in the applications section in content type and then action shows to the right of the content type. How do I completely remove the program name that is still showing in Firefox, Settings, General, Applications? If I need to go to the registry could you please tell me how to locate it in the registry? Thank you

At some point every night, my Firefox (and only Firefox) reverts to version 111 from the latest version. This happens on 2 different Windows 11 machines.

I can only get Firefox to run again by running from command prompt with "-allow-downgrade" option and then updating again.

I usually don't notice until I launch Firefox the following morning and it gives me a message that the profile was created with an older version and to exit or create a new profile.

I've had Firefox open and then it reverts and it gives me a XULRunner error about the profile being used by an older version.

I don't have any special backup or restore software running and the physical files in my Firefox folder in c:\program files\mozilla firefox are being physically pushed to a prior version dated 3/21/2023.

On both machines, I've completely uninstalled and reinstalled and it's good for a day and then reverts.

No log entries for the reversion can be found. It's just back to a prior version.

I've never come across anything like this before and have scanned for any malware or other issue, but haven't found anything.

So i was using this website called 9Anime and i was watching a show and i diabled my arrows for going backl 5 seconds and i have looked up everything i can to fix it and nothing has worked. Can anyone help me please ????

FFox 112.0.2 (64-bit) running in Linux Mint 20.3 Una.

1, Strange formatting of <B> inside <PRE>. When using the default monospace font inside a <PRE> element, adding <B> elements disrupts character spacing. A screen shot is attached. "wheat" & "purple" are the colors. They are set in a CSS file. Here is the source HTML:

<PRE class="white">
// (1/240) sec-per-char +-all-strides-------------------------->
<B class="wheat">24pps</B>                // <B class="purple">(Aa______)(Bb______)(Cc______)(Dd______)</B> source pps
<B class="wheat">_hpps(Aa..Dd)</B>        // <B class="purple">(A_______)(B_______)(C_______)(D_______)</B> source top hpps
                     // <B class="purple">(a_______)(b_______)(c_______)(d_______)</B>        bottom hpps
<B class="wheat">(AaBbBcCdDd)=60hpps</B>  // <B class="purple">(A_-20%)(B_________+60%)(C_-20%)(D_-20%)</B> target top hpps
                     // <B class="purple">(a_-20%)(b_-20%)(c_-20%)(d_________+60%)</B>        bottom hpps
<B class="wheat">]30'1.001htfps</B>       // <B class="purple">[A+a___][B+b___][B+c___][C+d___][D+d___]</B> target htfps
                     //                 ================         combed</PRE>

<This character spacing disruption is surely a bug.>

<2, Unexpected formatting of bogus <D> element.> elements to (bogus) <D> elements in the source HTML. The result? The colors were retained and the characters became aligned.>

<What do you think of 1 & 2? Can you test in other browsers -- I can't.>

<Thanks for Your Thoughts,> Mark.

Hi,

Is there any reason firefox would flag an mp4 file legitimately?

• The file extension and file type are absolutely mp4.
• There seem to be no mp4 related zero days.

Does Firefox perhaps just treat all downloads from suspicious domains as malware? Is there a zero day I missed? Is this based on some missing metadata on the file or something?

Thanks for any advice you can give here, I'm scared.

The desktop mouse cursor becomes large when using Firefox with >200% display scaling. It doesn't matter if it's 250% or 300%, the result is the same. My system configuration is as follows:

Opensuse Tumbleweed (up-to-date) Firefox 112.0.2 64bit KDE Plasma running Wayland

I've included 2 screenshots that show the difference in the mouse pointer size when outside of a Firefox window and inside it. Also, this issue is only present with Firefox; no other application produces this result. Any help or suggestions would be greatly appreciated!

I have Firefox Browser version 112.0.1 (64-bit). Firefox says that there is a new update. In order to install the new update it is required to have Administrator privileges in the computer. Until now, to update Firefow, Administrator privileges were not required.

This site, Costco Instacart, worked perfectly with Firefox as recently as April 15, 2023 but today fails (see attached image): https://sameday.costco.com/store/costco/storefront?zipcode=11021

Cloudflare believes it is protecting itself from online attacks when accessed by Firefox. The same site worked perfectly today, on the same computer, using Google Chrome.

Cloudflare is a major CDN and many important commercial sites, like Costco Instacart, have their content delivered by Cloudflare so this is a major issue with Firefox. For the moment there is a work-around, use Chrome instead, but it would be better to have Firefox address issues with Cloudflare.

Hi, I made a theme but have since not used it and swapped to another. Everytime I open the browser, it swaps back to the one I made for some reason. Under themes, it will still say the one that is showing is the chosen theme, but it most certainly is the one I made. I turn on another theme and toggle back to the chosen theme and it then changes correctly. Any idea why that could be?

Firefox seems to have a problem on Linux using USB Security Keys. I have two Yubico Security Keys which I use for 2FA. The problem seems to be that Firefox cannot communicate with the USB port, as it doesn't make any difference whether the USB Security Key is plugged in or not, the error returned is always the same and the Security Key does not light up.

I believe Firefox's WebAuth code must be fine, as it works on Windows, which is why I think it's some kind of permissions problem. Chrome works perfectly with the Security Keys on my computer.

I've used a number of sites (I've listed a couple below) where you can test your Security Key with Firefox on KDE Neon and the error is always "UnknownError: The operation failed for an unknown transient reason":

https://www.token2.com/tools/fido2-test/ https://demo.yubico.com/webauthn-technical/registration

I cannot log into Bugzilla with GitHub as my GitHub login uses a Security Key as the second factor.

Block autoplay not working on 112.0.2. I've tried going into about:config and changing settings. Doesn't help. Also under "Settings \ Permissions \ Autoplay" shows default for all websites as "Block Audio and Video" and under Websites "About:Welcome" shows as "Allow audio and video." I've changed the About:Welcome to block audio and video. I've also tried clicking the Remove All Websites button to delete the exception. Neither works. I save changes, exit Firefox, and restart. Same settings as before, and autoplay still starts.

How do I enable container tabs? The option to open a new link in a container tab has disappeared and the prompt doesn't show up when I long press the new tab button either

Hello everyone, I wrote an add-on for my own personal use. I don't intend to publish it. So naturally, it isn't verified, but I trust it. I am able to install the add-on as a temporary add-on under about:debugging, and it works as intended. The manifest file contains "browser_specific_settings": {

       "gecko": {
           "id": "example@example.com"
       }

} I would now like to install the add-on permanently. So I packaged it as a zip file. The zip file contains the files directly without a parent folder. Under about:config I set xpinstall.signatures.required, xpinstall.whitelist.required and extensions.langpacks.signatures.required to false. Then I went to about:addons clicked on install add-on from file and selected the zip file. I got the error message: "This addon could not be installed because it has not been verified". I am using Firefox for archlinux, version 112.0.

What am I missing? How can I install this addon?

I apprechiate your answers.

I have followed these instructions for deleting all bookmarks at once but Firefox isn't responding to these commands so I have to delete each bookmark individually. To delete a lot of bookmarks at once, use the Library dialog. Either: * Ctrl+Shift+b * Bookmarks > Show All Bookmarks In the left panel, click Bookmarks Menu. In the right panel, click the top item you want to remove, then press Shift+End to select all the way to the bottom, then right-click > Delete.

Firefox 112.0 running on Windows 10 64-bit laptop with a small (pixel geometry) display screen has unnecessarily large padding (white space) around each bookmark as I navigate bookmarks on the bookmark bar.

I believe this was a change instituted around version 89 (in a nutshell, I could see more - twice as many? - bookmarks listed within a bookmark folder with version 88/before. The vertical whitespace between bookmarks within a folder is excessive and makes it much more necessary to scroll within a (long) list of bookmarks in a folder when looking for one.

There was a procedure posted in the discussion below on how to set and enable "compact density".

Bookmark Padding in New Firefox Versions 2 https://support.mozilla.org/en-US/questions/1369996

The procedure below was attempted - browser.compactmode.show enabled, browser restarted, however, I cannot fin "Customize Toolbar" and "compact".

"go to - about:config search - "browser.compactmode.show" - change to TRUE , then close that window go to - Customize Toolbar at the bottom of that page, there a box called Density. Click that, you'll see "compact (not supported)" Apparently, it IS supported because I chose that. (it looked like it ignored my choice) After I closed Customize Toolbar, the bookmarks were compact spaced again. Exactly how I need them."

Is this fixable/solvable?