Firefox slow on Windows 10 after recent firefox update (2025) 138.0.3 (64 bit)

Using Google Voice became unusable. Firefox too slow. Had been running just fine up till maybe a month ago when I finally gave in and allowed Firefox to update. Not knowi… (read more)

Using Google Voice became unusable. Firefox too slow. Had been running just fine up till maybe a month ago when I finally gave in and allowed Firefox to update. Not knowing if it was a Windows or other issue I stupidly did a Windows reset and lost all my installed programs (including Firefox). I did a fresh install of Firefox and manually reentered passwords and bookmarks.

Ran fine for a day or two and is now again unusable. Cleared cache and appears to work OK at the moment but still sluggish.

Finn

Asked by Finn Lassen 1 week ago

Last reply by Finn Lassen 4 days ago

Mmmmm

Здравствуйте. Что произошло с браузером. Почему не загружаются страницы, а открываются те, которые открывались когда-то раньше? Мне сейчас постоянно жать на кнопку обнови… (read more)

Здравствуйте. Что произошло с браузером. Почему не загружаются страницы, а открываются те, которые открывались когда-то раньше? Мне сейчас постоянно жать на кнопку обновить страницу? Что вы сделали с браузером???

Asked by Дмитрий 1 month ago

Last reply by Дмитрий 1 day ago

Scrambled tabs on bootup

Running Linux Mint 22 and FF 138.0.3. Normal practice is to leave 2 or 3 FF windows open on shutdown so the same windows and tabs will re-open on future boot-ups when op… (read more)

Running Linux Mint 22 and FF 138.0.3. Normal practice is to leave 2 or 3 FF windows open on shutdown so the same windows and tabs will re-open on future boot-ups when opening FF. In the last several versions of FF as well as of the OS, those tabs appear on boot but display random text within a random tab for a given window. Also, the highlighted icon in the tray does not match the window that has opened. If I click and re-click the tray icons, they eventually display as expected.

Asked by stevenartigas 6 days ago

Last reply by stevenartigas 3 days ago

Can't see other video meeting participants and they can't hear me; all sites (Ensora Mental Health, psychology today, google meet, zoom).

I'm a therapist and within the last week (maybe since an update?) when I try to do a telehealth session from any website - Ensora Mental Health (my EHR), Simple Practice,… (read more)

I'm a therapist and within the last week (maybe since an update?) when I try to do a telehealth session from any website - Ensora Mental Health (my EHR), Simple Practice, Sessions by Psychology Today, Google Meet, Zoom - the client can see me but can't hear me, and I can hear them but can't see them (black screen).

I've checked all video and microphone permissions, Microsoft and all drivers are updated and mic and camera are functioning (they can see me). I tried changing the enhanced tracking to add exceptions for the sites (didn't work).

Please advise.

Asked by Charlene Lenkart 1 week ago

Last reply by Charlene Lenkart 3 days ago

Issues with full screen mode on MacOS

Firefox on MacOS in full screen mode makes the black offset between the screen edge and the Firefox window after logging in after MacOS is locked. It fixes itself when yo… (read more)

Firefox on MacOS in full screen mode makes the black offset between the screen edge and the Firefox window after logging in after MacOS is locked. It fixes itself when you exit the full screen and enter it again.

How to reproduce?

  • Open Firefox and enter the full screen mode
  • Close your MacBook and wait until it prompts you for your password or touch id
  • The Firefox window has black offset between screen edge and the Firefox window, that was not present before
  • Exit the full screen and get into it again, and the offset is gone

Asked by turejaku 5 months ago

Last reply by turejaku 2 days ago

I have a suggestion for the Tab Groups - Who Do I Tell?

I absolutely love the new tab groups on Firefox. I am a lawyer and i keep a TON of tabs open at the same time. I might be working on a case, and I can create all the tabs… (read more)

I absolutely love the new tab groups on Firefox. I am a lawyer and i keep a TON of tabs open at the same time. I might be working on a case, and I can create all the tabs related to that case together, come back to it a day or more later.

I also open up a zillion news articles every day. Some are fun (Fun Articles Group), some are about our declining society (Rule of Law Group), some are about AI (AI Articles To Save), some are Case Law I save for my internal library (Case Law to Save Group).

The problem I am having is that each of the Windows where these various tabs are kept is are not seen by the Tab Names. So, if I go to my pinned Taskbar icons across the bottom of my screen, and toggle across the Firefox icon, the many different labels that pop up are ONLY the tab names.

That is, there is nothing reflecting the Group name to which the tab belongs. I just spent all this time grouping my tabs together in separate windows, and when I want to go quickly to one of those Windows (each Window has a Separate Group Name in my personal system), I cannot tell which one is which.

So, my recommendation is that Mozilla designate in the taskbar prompted tab items which Group each tab belongs to (if it is assigned to a Group). It would make toggling between the tabs sooooooo much easier and efficient.

Additionally, I love that when I assign a new item/tab to a Group, it automatically groups them with the other members/tabs in the Group. However, after a certain point, it gets ridiculous. Perhaps there can be an option where you can separate the Groups into two or more Windows (eg Group named Case Law to Save, if I have 10 different ones open, put the 11th one in a new Window, instead of just adding another tab to the ever-burgeoning Window full of tabs).

Maybe I am the only idiot who has so many tabs open that these issues are a problem. But the mere fact that Mozilla created the organizational tool of Groups suggests to me that I am not the only one who keeps a lot of tabs open at the same time.

I have no idea how to suggest this improvement to them. I am not a coder. I cannot contribute in this way.

Thanks to those who contribute to the improvement of this product! Michelle

Asked by mrozovics 5 days ago

Potential Security Risk - on local IP

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 P… (read more)

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

Asked by Ag2000CO 4 days ago

I'm getting this "404 Not Found" when I try to search on Firefox.

This 404 Not Found message only started happening about 4 weeks ago on my Imac. I can't search anything without getting this message. Very frustrating. and I have to go t… (read more)

This 404 Not Found message only started happening about 4 weeks ago on my Imac. I can't search anything without getting this message. Very frustrating. and I have to go to Google and have no problems Any ideas? Mozilla/Firefox Program up to date

Asked by elegalworks 5 days ago

Mysterious B appearance

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… (read more)

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.

Asked by Dean 4 days ago

Firefox Extension for Roboform

Recently, yesterday, the Roboform extension stopped displaying in Firefox with the other extensions next to the address entry bar. I have rebooted the system and deleted … (read more)

Recently, yesterday, the Roboform extension stopped displaying in Firefox with the other extensions next to the address entry bar. I have rebooted the system and deleted and reinstalled the Roboform extension, but it still does not show and it stopped allowing for login password selection.

Asked by No Pa 5 days ago

Facebook "end-to-end encryption" on Firefox

Facebook's help page says their "end-to-end encryption" will only work with Edge and Chrome. Is anyone at Mozilla working on making Firefox compatible with this? I only u… (read more)

Facebook's help page says their "end-to-end encryption" will only work with Edge and Chrome. Is anyone at Mozilla working on making Firefox compatible with this? I only use Firefox for Facebook messaging, since I don't trust those other browsers, or the Messenger app, which I know for a fact is a trojan. But as it is, I have an incoming message that I can't read. Thanks.

Asked by davidlgrubbs 4 days ago

Youtube video on Firefox

After half hour or so the browser for Youtube just hangs All the links are not connecting It shows up as arrow NOT hand It just hangs until you refresh the browser so you… (read more)

After half hour or so the browser for Youtube just hangs All the links are not connecting It shows up as arrow NOT hand It just hangs until you refresh the browser so you lose all the queues

Asked by eddmil 4 days ago

Font is all garbled?

The font is all garbled on Firefox on the latest version, and I can't even read the settings to see if I can fix it. Any ideas? I did an inspect and it says it's the "sys… (read more)

The font is all garbled on Firefox on the latest version, and I can't even read the settings to see if I can fix it. Any ideas? I did an inspect and it says it's the "system UI" font, but every other app/browser is loading it fine. Help!

Asked by Scoots 3 days ago

browser timing out

I am trying to resolve an issue with my firefox browser for MAC OS. Everytime I close my screen to sleep and open it back up, the browser stays on time out mode. I have t… (read more)

I am trying to resolve an issue with my firefox browser for MAC OS. Everytime I close my screen to sleep and open it back up, the browser stays on time out mode. I have tried downloading the update, but it never seems to complete or fully initiate. I have gone to the mozilla website and downloading directly from there but the new download wont even let me log into my gmail.com using my biometrics. any ideas?

Asked by Nina Simone Declama 3 days ago

Interesting Action by Duplicate Tab in Mac Firefox (not an error)

This is not an error, but it may be useful for some users of the Mac version of Firefox to know. I have several tabs pinned to the left side of the tab bar (just the ico… (read more)

This is not an error, but it may be useful for some users of the Mac version of Firefox to know.

I have several tabs pinned to the left side of the tab bar (just the icons). Some of them I intend to use as "model" tabs to be duplicated for a session and the duplicate then deleted (such as bank logins).

I have found that, if I left-click to select a pinned tab and THEN right click and select Duplicate Tab, the duplicate appears immediately to the right of the pinned tabs, and to the left of any open non-pinned tabs. But if I right-click the pinned tab WITHOUT first left-clicking it, it goes to the right of the LAST non-pinned tab on the right.

This does not cause any errors, but it may be useful for some people to know; they can control where they want the duplicate tab to appear when they create it!

Asked by Allan and Gayle Richardson 3 days ago