Firefox Support Forum

David, here are two screen shots (ss) to clarify my issue with email and a third regarding another issue (see below).

Number one ss shows what I see when I go to Thunderbird. I am allowed to delete if I wish by first marking the email and then clicking delete. If, however, I wish to view the message, Number two ss appears. I cannot delete the message without going back to Number one ss as that option has now disappeared. This was no problem on my old computer.

The other issue is related to the above. I have over 250 emails without being able to access them (see Number three ss). On the left upper side is the number of emails I have, but only six old emails appear, something that is confirmed in the upper right frame. No matter what I do, I cannot access them.

Every time I use YouTube on Firefox it feels like a mental torture. It starts off with micro-stutters initially - annoying but nothing crazy. After some time the loading speed of the website and the videos themselves increase dramatically. And eventually it becomes unusable:

• Scrolling feels like the website is running at 30 fps
• The videos take several seconds to load
• It also takes multiple seconds to catch up when you select a specific moment of the video

The only solution so far has been restarting Firefox entirely, just close and open and pray. Then the problem comes back after some time.

Solutions I Tried:

• Disabling AdBlock (didn't work)
• Enabling Hardware Acceleration at all time (didn't work)
• Uninstalling unwanted Extenstions (didn't work)

All of these problems disappear when using Chrome or Edge.

Firefox continually refuses to open, and I have worked all the suggested solutions once again. I used it for a few hours this morning, switched briefly to Chrome. Went to go back into Firefox, and it wouldn't open again. Did all the work arounds....uninstall, reinstall, even system reset to the previous day. Still won't open. I am so disappointed at having it behave so unpredictably. I sometimes sense it is related to updates....almost afraid to reboot my computer sometimes because it will not open afterwards. My recent install attempt appears among the public users, which is not the case as mine is a private PC. The Mozilla Program itself, however loaded to the 86 bit program files. Not at all sure to proceed at this point.... getting forced over to Edge it feels like....

My issues:

1) Every time I close Firefox I get the Mozilla Crash Reporter telling me that Firefox has crashed. Sometimes I even get the Mozilla Crash Reporter when I start Firefox. But Firefox is still there.

2) When I turnoff my Comodo Firewall, Firefox has no Internet connection.

I have done clean uninstalls/reinstalls over and over. I go thru and adjust settings. My other browsers work fine, including WaterFox, WaterFox Classic, and Vivaldi.

I tried turning off my security software to test. Specifically exiting Comodo Firewall seems to have caused Firefox to not have an Internet connection. All other browsers have Internet access except Firefox. And the Crash Reporter cannot "report" when the Firefox Internet connection does not work, though I did have it report many times when the connection DID work.

One other clue: In Task Manager I see that even though I have closed Firefox, there over 20 instances of it still running. When I try to open it again, I get the "Firefox already running" error message. When I try to kill these instances/processes many will not close.

This problem has been persistent for more than half a year since I built my new PC. I am on Windows 10 LTSC. Besides Comodo Firewall, Emsisoft Anti-Malware is my main anti-malware.

Please help! Thank you!

For about a couple of weeks, there has been a lot of delay between what I type and when it actually appears. It's maddening! I have not changed any of my Firefox settings. I did a 'refresh' about an hour ago. I am not seeing any network activity that I cannot recognize. I d/l'd 'Malwarebytes' and ran it..."no threats". MS Defender has always been on & protecting me. I have never had this situation occur before and am hoping for some help (5 to 10 seconds to wait for what you've keyed in is not fun).

I am using Firefox 127 on Ubuntu.

When I press the Control key, I often lose focus in the window I am currently viewing. This is annoying as it prevents me from copy-pasting for example.

Sometimes the focus is back when I release Control, sometimes it is lost and I have to click again on the text field. It does not happen on all websites, for example support.mozilla.org works well, but it happens on duckduckgo or overleaf.

It does not seem to be the same as existing issues such as [the "show mouse when press Ctrl" of Ubuntu] (it is disabled) or an addon (the problem still happens in safe mode).

In case it is useful, when I press Control the tab bar background goes slightly darker, see attached images.

Thanks for your help :) Nicolas

For over a month now i have a problem with youtube. It loads videos very badly. I have good connection speed, but 0 network activity and 0 buffer health in Stats For Nerds on youtube and videos dont load. I can wait for 10-15 minutes (but sometimes they load almost instantly) before video load 40 sec buffer and after that buffer ends i can wait for another 10 minutes befor it load buffer again.

This problem persist only in my firefox on my computer. I tried deleting all the extensions, reinstalling firefox, "refresh firefox" future, changing useragent, reinstalling windows (it was the time anyways) but it doesnt solve the problem. I dont have this problem in other browsers (edge, librewolf, chrome) on my computer.

OS: win 11 x64 Firefox 127.0 x64

I installed Firefox years ago. This morning, when I click on the browser icon, I get this message: Error platform '127.0.2' is not compatible with minVersion>= 127.0.1 maxVersion<= 127.0.1

What is going on? The browser updates itself so I don't do anything. But now, it doesn't work. I use an alternate browser to send this message to you.

I am running Mac Big Sur, 11.7.10. When I am in Firefox version 127.0.2 and I go into any Google search, the tab crashes. It works in private browsing mode and also in other browsers but not in non-private browsing in Firefox. I have tried disabling extensions, add ons, etc. Nothing seems to help. This started happening a few weeks ago with any YouTube page also. How can I fix this? If I can't I will stop using Firefox as I cannot function like this. Please advise!

Automatically hide taskbar in desktop mode => Enabled Firefox => Maximised When cursor is moved to outer edge of screen, taskbar should unhide (Expected behaviour) but in this case it remain hidden (Reality). Firefox along with all other spinoffs give same result. Chromium based browser works perfect, and taskbar automatically unhide itself.

As OLED screen have became common as monitor, Taskbar auto-hide is must. If this issue cann't be fixed I may have to change my primary browser which I used for almost 15 years.

Kindly, look into it. If Chromium can do it, why not Firefox.

Hi, I hit Foxfire icon, I get XUL Runner message,

Error Platform Version 127.0.1 is not compatible with mini version ] = 127.0 and max version ] = 127.0

How do I correct and gain access!!???

Please help, definitely liked days of yore when one could call.

Andrew

When a user opens hh.ru / headhunter.ru (famous HR portal in CIS countries) in Firefox, and then opens dev panel and tries to interact with it, especially with the code inspect tool, the whole browser stops responding.

The problem persists even on a clean Firefox profile. Other browsers (Chromium-based) work well with the dev panel on the hh.ru site.

There was an update posted today. I ran the update this morning. Now Firefox will not open.

error platform version 127.0.1 not compatible with miniversion >= 127.0

                                                                                  miniversion <= 127.0

Running Windows 10 Version 10.0.19045 Build 19045 64 bit Should I remove and reload program?

For the past couple of weeks I have been getting the "Hmmm, We're having trouble finding that site" error screen quite often from both searches and links from other sites. It's always happened once in a while but it hasn't been anything bothersome. However recently it has become quite bothersome because it's happening a lot! However not all the time. It's not completely broken, just mostly. And it's happening while trying to visit sites that I know and visit frequently such as Amazon, Ebay, and even sites for local businesses that I trust and know are working. I'm not having any internet issues with my home wifi, nor am I having this issue with other browsers. I have however also noticed it on my Firefox mobile browser as well. I posted about this a few days ago and got some email back about an issue with my post. If this happens with this one and I'm unable to get this resolved I will just get rid of Firefox on my devices. FF has been a long time favorite and is usually set as my default browser but if stuff like this is going to continue, I can change that real fast. There are plenty of other browsers that work just fine and have decent customer support.

For about the last 5 days I am not able to use Google Search on my MacBook Air using Firefox. My start page is Earthlink. I keep getting this error message ( Application error ; a client side-exception has. occurred ( see the browser console for more information ). My email is west47916@earthlink.net. Could the problem be Earthlink or Firefox.

Hi. Every page I visit I get at least one message popping up with the URL at the top, the message body of "1" and the option for OK. Many pages have multiple prompts for what looks like advertising sites (based on the URLs). Sometimes I get the option to check a box saying "don't allow URL to prompt you again"

Example message for when I go to google: https://imgur.com/a/RBd4mS3

I guess it might be some sort of debugging mode? I tried uninstalling and reinstalling Firefox and it still happens. I am on latest versions: Firefox 127.0.2 on a MacBook Pro (2019) with MacOS Sonoma v14.5.

Can you please help me to remove these prompts? It makes Firefox pretty much impossible to use due to multiple clicks per page load. I've tried searching for help pages but it's very hard to explain the problem to a search engine! Human needed! :)

I am using Windows 11 and FF 127.02. I have read the lag issue with Youtube was suppose to be corrected with FF 127.02 but it is not. I have been using FF for many years now an love it. It is my understanding that it is the ad blockers causing the slow down. Do you have an estimated date when this will be resolved. I have tried every trick included running it in diagnostic mode or trouble shooting mode. Nothing seems to work. Not even a refresh.

Thanks

I've been out of town. After returning home Firefox updated to 127.0.2 but now it will not close its process when I close its window. When I try to launch Firefox again I get the error message below and attached:

"Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window. <Close Firefox> <Cancel>"

When I select "Close Firefox" the new Firefox window will then launch. However, if I open any web page the same error occurs after closing the window.

If I launch Firefox and then close it without opening a web page I do not get the error the next time I launch. Somehow going to any web page in Firefox prevents that instance of Firefox from closing.

I'm running Windows 10 22H2 Build 19045.4529 and it's shown as up-to-date.

I can't download anything by that green download button (Youtube). I just receive error messages, see attachment. I have read their FAQ and I have latest versions of Firefox and savefrom.net helper.

Almost daily I get a message to download or dismiss update. When I dismiss the message, it continues to pop up. When I hit download, nothing happens. This is locking up my computer at times & slowing everything down. I actually don't see the need for daily updates. What is causing this and how can I stop it?