Firefox Community Forum

When signing in to online Shaw Webmail, message says 'Security Check Failed. Clear your browser cache and retry'. Screenshot attached. Have done so in "Clear browsing and data history", (as per Firefox guidelines) multiple times, for all History and cache. Did not resolve issue. Contacted Shaw Support; they instructed to try logging in with Chrome browser. Worked fine. Issue appears to be strictly with Firefox Browser (on multiple devices). I prefer Firefox over Chrome. Any advice greatly appreciated.

Constantly getting the following messages - "Not Responding." "This application is not responding. The program may respond if you wait. Do you want to end this process?" I am on my email or reading an article on my email and it goes blank. Also, I get "Restore session or start new session." The only way I can get to start my computer ( getting the password box ) is if I do Control Alt Delete many times.

Very Frustrating indeed!

We have recently been caught in an apparent marketing test simulation by an AI provider who we would never expect to prevent productivity resulting in great harm to those I support. So when emails were going nowhere and set MFA was systematically destroyed -- I turn to FireFox ESR personal to ensure my data remains secure among those world class suppliers I have trusted for years.

I trust FF but the subtle ways in which our WIndows10Pro is trying to wipe out all relationship with other OEMs - I want to be sure that FF is set up as it should be. It appears even in FF private browser window - that the OS or Copiliot is attempting to destroy that also as part of what is some scheme according to bank Fraud experts I've consulted as a scheme to destroy Win10 home office usage and force move to WIn11.

My home PC has supported many many individuals and organizations. I cannot believe what I have been put through,. Still rebuilding relationships with the worldclass firms I rely on.

What are the definitive steps that will ensure that data cannot be manipulated and OS cannot randomly overwrite desperately needed Disabilty / Accessiblity changes needed to even see the "simulations?' at 1-2point font. This activity is allegedly CoPilot - which would be the last place I would suspect. The violations of trust and data integrity go way beyond what you might imagine.

How to protect from any and all deceptive practices where what I"m seeing and doing are not being alterered in such ways that prevent me from supporting a Hipaa client because a rogue software misrepresnts and destroys valuable data and more importantly TRUST.

Part of undoing damage due to Coplilot is to follow those I trust - so regarding Firefox I download it from official Mozilla / Firefox - current ESR version for Personal use. - I try now to do most work that requires a modicum of importance - and still each moment there's some deceptive something or other trying to deceive me into excluding Firefox.

I'm not here to blame Copilot - and MS accountability for this is reported via the public domain and several professionals I've consulted. Feeling handicapped with handicapped devices. Totally hostage to a system that wants to ensure everything we do is via Microsoft.

There's a time and a place for security we can trust. I had security keys and MFA out the wazoo. It's taken amonth to even begin to get back to a secure wiped licensed Win10 system. And the first job was to ensure the OS could not mess with Firefox. Something is tearing at that already. My only involvement with MS at this point is to ensure they don't mess with FF's integrity. The FF account is an outlook address so pls LMK if that is hurting rather than helping.

I cant do anything if trust is violated and data is changed intentionally by a rogue software. Plus the overwritiung of accessiblity / disabilty modifications is unconscionable.

HOW TO KNOW I'M NOT MISSING THE LATEST TRICKS DESIGNED to take away FIrefox or others who we trust.

I've use Firefox or Foxfire for several years at the time I installed it I was using Windows 10. I now have Windows 11. Ever time I try to access he internet a window comes up and ask me to create an email address with Gemini. Google or Microsoft will not let me access my internet, [email removed]@nquinnlaw.com. How do I use Mozilla to access my email.

when playing my game the program keeps stopping and starting. Every 7 to 9 seconds while playing my game I get kicked to the task bar and it stops responding for a few seconds and when I click to put it back on my screen and again 7 or 9 seconds I have to repeat the same thing. Bottom line is the gaming program keeps starting and stopping for a few second. This is the only program doing this. This started doing this on June 28 2025 after a new Firefox update. I played this same game on Google and it worked just fine.

Hi,

Firefox version: 139.0.4 (64-bit) OS: Windows 11

I have been having issues where Firefox tab will just crash out for no reason it appears and it happens at random times and once the tab start to crash, and I restore it, it will crash again and again. The only way tog et out of the loop is to restart Firefox.

I have tried: Refreshing/Reset, Clearing Cache and History removing all themes, disabling extensions, disabling my anti virus. Turning off hardware acceleration didn't make any different.

I currently have 2 extensions enabled: uBlock Origin 1.64.0 and Bitwarden Password Manager 2025.5.0

In the about:Crashes I have reported them all and they seem to have the same type of reasons in the Raw data/Minidump which are: EXCEPTION_ACCESS_VIOLATION_WRITE EXCEPTION_ACCESS_VIOLATION_READ

Any help as to what to try next?

Gaz

After upgrading to Firefox 140, I can no longer use the down arrow to quickly select a different search engine.

For example, if I want to search for something on Wikipedia instead of my default DuckDuckGo, I used to just type the search term, press the down arrow twice and hit enter. If I wanted to search for a youtube video, I'd hit the down arrow three times, etc. The selector for different search engines in the address bar seems to have changed in a way that no longer allows this sort of quick and easy keyboard-only method. Is there a way to re-enable the use of up and down arrows to quickly select a different search engine?

After upgrading to Firefox 140, the address bar no longer lets me quickly switch between search enginges using the up and down arrow. Is there a way to re-enable this?

Before, I could type the search term and then press the down arrow a couple of times to search with, for example, Wikipedia instead of my default DuckDuckGo. The new address bar no longer seems to include this behaviour.

Firefox has been crashing several times an hour for multiple days. I have tried:

Changing/Upgrading RAM Reinstalling Firefox Resetting Firefox Reinstalling Windows Updating Drivers

I am using Firefox v140.0.1 Snap on Kubuntu 25.04, Kernel 6.14. Since the Firefox update in the past couple days, the mouse cursor has started appearing huge and slightly blurry (as though the image is scaled up) in Firefox and nowhere else. The size is visually annoying, and occasionally difficult to know exactly where I'm clicking (trying to move the caret in a text box for example). It also appears to be a different style from the main desktop cursor, the shape and color are ever so slightly different, but this may already have been the case and I simply didn't notice because of the previously small size. Firefox doesn't have its own built in cursor settings that I can find, nor obey the system cursor settings. I have a high DPI display so perhaps it is being over-compensated for? e.g. both the system and Firefox are scaling the cursor up, assuming the other hasn't done it already, resulting in a cursor that's too big.

Alternative search engines no longer appear when typing the stasrt of a search. Am able to set alternative search engine in settings but need to go back to settings if I want to use another one. This happened after a recent update - perhaps as much as a week ago.

My Windows PC laptop has stopped syncing bookmarks from my android phone, even though I set them up to sync with each other. The syncing suggestions under Firefox support for syncing do not match with the options on my laptop or android phone.

Firefox is my default browser. I few days ago, it failed to open, and continues to do so. When I click on the icon, I get the blue spinning circle for a few seconds, then nothing. I have tried to refresh and reinstall, but nothing worked.

Firefox keeps crashing, or better doesnt even open. In Task Maneger on my Windows 11 System I didnt even see the task preformed. So I tried to uninstall Firefox and reinstall Firefox, still the same Problem. I tried to refresh Firefox but it was no use. Sometimes for a brief moment of time a small window opens with the Firefox logo, for two seconds I can read the word Firefox Troubleshoot but it closes instantly. I need Firefox as my Browser and would like to have it back in use as soon as possible. Thank you for your help LH

Recently I'm having an issue with Firefox that makes it so when I try to open it, it simply refuses to do so. Say on my desktop I double click the icon it will open for a split second and then instantly close and refuse to do anything afterwards. This is very frustrating, and I haven't yet discovered a solution and would really like to be able to use Firefox again. What is really strange is that this is a persistent problem not only on my laptop but at my pc as well which are two separate devices. If anybody can help or has experience with this problem to offer incite it would deeply be appreciated.

140.0.2 (64-bit) Windows MSIX package mozilla-MSIX-1.0 This one has access to ChatGPT, among other AI chatbots. The version above does not mention any AI products.

140.0.2 (64-bit) NO Mention of MSIX NO AI chatbots as far as I can find.

Each wants to be the default, and it doesn't cause a problem unless you try to open the not-default. Then you can either select the not-default to be the default, or NOT. Doesn't matter, as far as I can determine there is no loss of functionality whether default or not-default in either version.

However, it's a bit annoying to have two product with the same version number and different properties.

Notice, this looks like a problem that was solved earlier. But that solution involved installing V140.0.2, obviously that won't work for me.

I await your wisdom---