Diễn đàn hỗ trợ Firefox

I am trying to work with an older piece of equipment that has an internet interface, a local IP 192.168.1.x

When I try to connect with FireFox I get the error "Warning Potential Security Risk". When I continue the error message is "MOZILLA_PKIX Error Self Signed CERT"

Accepting the "risk" things seem to work for a while. However, after several timeouts and reconnects FF will not connect. If on the other hand I just let things run without making changes the connections stays up without an issue (until I start making adjustments).

Looking at the certificate (from ~2012) yes it is from the manufacture. There is also a "Finger print"

Is there anyway to bypass this warning/blocking to eliminate the FF/equipment interface from my troubleshooting problem?

Thanks, Lou

No doubt I had something to do with the (fancy font uppercase in bold) B appearing in my Firefox header line as the first and left-most character (image attached). Anyone know the source for this and how to shut it and anything else it does off? I like many others I have read commenting about unwanted things thru the PC years that have a disdain of things that sneak through uninvited.

The other thing so far as I know had nothing to do with Mozilla or Firefox but I'll mention it in case someone has an idea. A product install by the same name permanently labeled an outboard drive with this label bold text'Roboform2Gobold text. I know how it got there, it was with the install the product by that name, which I uninstalled, and no one from that company would or couldn't tell me how to get rid of the relabeling it had done. Uninstalling the software didn't take it out, and no one in a general forum had any suggestions. I know the traditional approach of adding or changing a label, but change attempts don't affect this reminder of a poor product that I had decided not to keep. They refunded, but did not help with the changeless drive label.

I am using an extension to monitor websites. I would like to start it as homepage. Unfortuantely, it does not come up active. It requires a manual reload (Ctrl-R) because it doesn't fully start.

Is it possible to automate this initial reload?

If not, can the extension developer force the reload on browser startup?

Thanks

I have notice for some time the Firefox start have updates almost daily it is not too bad whats that bug me is the matter the updates only start show up the information the availability after you log in any account or web site , never in your Firefox Home. you can stay 1 hour with Firefox open with home screen and no alert of updated show 10 second after you login in on email account or enter in any web site the pop up the availability updated what start became annoying .

Thank you .

I've recently sync'd my PC bookmarks etc to my android tablet and since then web sites that previously remembered me now keeping asking me to log in. BBC news, FaceBook are examples.

I like using Fire Fox (FF), but I am constantly met with resistance from different organizations which try to tell me to use MS Edge, or Google Chrome. It seems like FF is a problem for them. Now, after successfully using Fire Fox for decades, I can no longer log in to my bank account when using FF. I can use any other browser, but not Fire Fox. I've spoken to the bank, and they point the finger at FF (of course), but this time (unfortunately) I have to agree with the bank. What did FF do that now makes it impossible for me to access certain web pages, or certain features, like "logging in" to accounts?

Can you please un-F whatever you F'd up? Or, please explain to me why I can do everything the exact same way I've always done things when like using Brave, Chrome, Edge, Chrome Cast, and TOR, but can no longer do them when using FF

My Mac shut down unexpectedly. Upon rebooting the newest version of Firefox - 138.0.1 was installed. All of my bookmarks have disappeared. I tried to restore from a backup but when I hit restore in the manage bookmarks window it says "choose file" but it lists no files to choose from. I found multiple backup files by accessing my Firefox profile via finder. However when I try to open them with Firefox it displays a blank page and nothing in the bookmarks tab. Is it possible that the bookmark files have also been deleted from the backups as well? If not, how do I transfer these files to the active bookmark tab in the menu bar other than using the restore function which offers no files to choose from?

My YouTube homepage is blank when I visit using Firefox (see attached screenshot). Here is a list of all of the fixes I have tried:

-Disabling all extensions and turning off Enhanced Tracking Protection (at the same time) -Clearing cache -Clicking 'forget this site' on YouTube in my browser history -Restarting my PC/Firefox -Refreshing Firefox profile (this worked, but the issue returned after an hour) -Changing my system theme to light mode -Launching Firefox in troubleshoot mode -Logging in on an incognito window (with the same result) -Probably some other things I'm missing (I tried pretty much every result I could find from looking up 'YouTube homepage is blank' and 'YouTube homepage not loading).

The issue only occurs on Firefox and only after I log in to YouTube. This has never occurred before. I checked to make sure my Firefox and YouTube settings are the same as they've always been.

YouTube videos load fine as long as I paste the direct link into the URL bar, but ONLY the video (no comments, recommended videos, likes/dislikes, description, etc...) and I can't take it out of theatre mode nor fullscreen it (fullscreening it just removes the top bar of the browser--the video itself still has black bars on the sides).

Sometimes when I reload the page, I see the following at the end of the URL: &ThemeRefresh=1. I don't know if that means anything.

I am using the Firefox app on Windows 11. I am not using a VPN. This issue is specific to YouTube and YouTube only.

Any help would be greatly appreciated. Thanks!

I'm running v138.0.1, but the ability to group tabs that was supposedly introduced in v137 is completely absent from my browser. I can neither drag tabs onto another to create a group, nor create groups by right clicking on a tab. What's up with that?

I updated Firefox to version 138 yesterday(29rd April). I use latest stable version of Linux Ubuntu. Sites itself will work, but top of browser wont. Can click open new tab from +-button, but can't close it.

Browser stops reacting to mouse clicks when browsing (after hours of browsing) and I have to use right-click to navigate on sites.... until I restart browser. I tried to close tab and refresh tab when these problems occurred. Also, this occurs on all sites.

I think this is clearly browser problem(because clicked areas are on browser, not inside tabs), not problem in sites itself, because problem manifested itself after hours of browsing, not immediately.

Edit: I'm not well-versed enough to write Bugzilla-report. Also in 138.0.1-1 version, where I updated 3rd May 2025.

Edit 2: I've added picture of area that stops working. Edit 3: On another picture, can't close "Archaeology" tab, no matter what. Edit 4: Clarified things up.

Previously I could change the color of ONLY visited links. 138 broke that ability and replaced it with a contrast setting that changes every kind of link color and the page background color/design too. This totally stinks and makes the visited web pages look terrible and hard to read too.

Is there a way to set FF so that ONLY visited link colors can be changed to the preferred one?

In the last few days, after some minutes of usage, parts of Firefox become unclickable:

- I can still click on tabs to change tabs. - When hovering over the cross button to close a tab, it changes appearance as it should. Clicking the button does nothing. Ctrl+w still closes the button. - Clicking on the address bar does nothing. - Cannot click on back, forward, refresh buttons. - Cannot click on any add-ons. - Cannot click on preferences. - Can click on the button to open a new tab. There, I can enter an address. Once the page has loaded, address bar becomes unclickable again. - Bookmarks toolbar is still working as expected. - Keyboard shortcuts (ctrl+t, ctrl-w, ctrl-l) still work as expected.

I'm running ``` Mozilla Firefox 138.0 20250428130755 20250428130755 ```

on Manjaro 25.0.1 with GNOME 48

Most other forums don't impose this type of limited categorization. What is the best way to proceed here when you topic here doesn't have an obvious fit? This is not uncommon. Should I be concerned that my question won't get to the right eyes/assistance needed?

Some venues offer the ability to add tags. Why not give us the ability to add "tags" if you believe some sort of pre-designation is necessary? Does that qualify for my choosing this topic?

How about "other"?

I can not get Youtube to load on desktop Firefox. It works fine on the mobile website, app, and Chrome. I've tried clearing cookies and site data, removing extensions, resetting Firefox, and disabling hardware acceleration, and so far nothing has worked. Has this been happening to anyone else ?

When I open any stream, it takes about 2.5 seconds from the start of the page loading to the appearance of the stream image and playback. For comparison, in version 137 it took about 1.0 seconds.

I tried to launch the browser (Firefox 138.0.1) in troubleshooting mode, and also created a new profile, but the problem remained.

I also downloaded portable versions: 137.0.1 - everything is fine. 138.0 and 140.0a1 - slow loading.

I also have Zen Browser installed (the latest version is based on 138.0.1) - everything is fine.

- Translated via Google Translate.

Suddenly today (April 30) when I try to go to Yoube home page, I get a blank (see the picture). But if I try in a private window, it works.

I see Youtube has re-designed its home page - maybe that's part of ther problem.

Is there a setting I can change?

Maybe after update, or i dont know why, but now. when youtube (or any other videoplayer) in fullscreen - taskbar menu is visible (Is on topscreen). In google chrome problem is not repeats. I'm using StartAllBack app for classic start menu, but till that day all was fine. I checked on two devices with firefox - the same problem (StartAllBack or windows version wasnt cahnged). Windows 11 24H2

Just recently, the Bookmarks sidebar quit appearing automatically when I opened Firefox. In each new window, it can be selected manually.

I posted this thread under "Privacy and Security" because other threads on the Internet (some quite old) say this issue can be fixed by changing the Browsing history settings. I tried that, but got a strange result: the Bookmarks sidebar did appear automatically, but the webpage I was on would not display any images embedded in the page. And then I wondered: why must I eliminate Browsing History just to automatically display my bookmarks?

Any help would be deeply appreciated.