Diễn đàn hỗ trợ Firefox

I use Firefox every day at home and at work, and I really need to separate different content across many profiles between devices. Can I access the features of the new profile manager please?

the msg returned

Hmm. We’re having trouble finding that site.

We can’t connect to the server at marvelsearch.com.

If you entered the right address, you can:

   Try again later
   Check your network connection
   Check that Firefox Developer Edition has permission to access the web (you might be connected but behind a firewall)

i am using a local dnsserver and firefox is connected to it. is this the reason? if so how can i disable this? other firefox features are working beautifully.

Hello! See the screenshot please: so, I downloaded à pay-bill, with Firefox (under ubuntu), in private navigation, and I get the file with a padlock-symbol at the end. What means that? What means that for me (on my computer), what means that for à friend, when I sent him the pdt-file (can he open it?). Nota: I understood that I can choose between "delete downloads when closing the privat window" or not. And I choosed not to delete them (but there appears this padlock-symbol). Thanks for your help! Michael from France

In "Language and Appearance" Dark theme is selected. Also in "Themes" the dark theme is selected. Some websites are displayed in light colours, despite this, which is an annoyance, but not yet a problem. The problem is the "light" websites are displayed in pink-ish palette, which seems to correspond to the default light theme. browser.display.background_color is set to #FFFFFF, so no pink here. privacy.resistFingerprinting, which should have no impact, but one help article suggest that it might interfere is set to false The problem appeared after the last restart, which may also mean the last update. Any ideas how I can make either the dark theme work properly or at least have the webpages displayed in their original colours rather then pink hue?

WINDOWS 11. FIREFOX 106.0.1

LATELY, I CANNOT USE MY CREDIT CARD. i INPUT MY SAVED PASSWORD FROM WINDOWS LOGIN.

IT OFFERS CHOICES THEN WHEN I ATTEMPT TO PAY WHAT I WANT TO PAY, THE FORM GOES BLANK AGAIN.

NOT SURE IF THIS IS A WINDOWS ISSUE OR FF, BUT AT LEAST MY ANSWER WILL BE QUICKER HERE.

THANK YOU.

I downloaded something today that installed "Cubbie" and Yahoo. I have no interest in either,especially since Cubbie pops up as my search engine. How do I get rid of it? Thanks! BB

I opened FF this afternoon and it op0end like a new first time install- asking about setting up some damn profiles and showing news, AI, weather and crap I do not want or use..

I can not seem to restore it. All bookmarks, PW, menu bars and links are now gone.

I have a problem, i have yahoo account that because of tje 2 way auth being 2 phone numbers that i lost and as mail recovery was one email to each other practicaly i lost any chance to log in them, my only chance is to gve a phone on yahoo in us which i cant afford, i need to change the email from my firefox account so i can still use it, im ready to prove in any way that is my account, i send this from my phone that im using for a long time, ao whqt can i do? The mail i want to change it too is [edited from public] @yahoo.com, pls hlp

SUBJECT: Profile missing after update to 146.0.1 

After the last Firefox update (146.0.1), I can no longer access my profile that included bookmarks, history and passwords.  

After the update was done on 12/19/25, I was given the option to choose between my original profile and a newly created one. The next day when I opened Firefox, there was only one profile shown and my original profile was gone. I have read numerous fixes for this problem but nothing seems to work.

I have done the following to try to locate my missing profile to no avail. 1. I went to the Profile Manager but the only profile listed was the newly created one. 2. I didn't do a refresh so there was no "Old Firefox Data" folder to copy the data from. 3. Used about:Profiles, Again only the newly created profile was listed 4. I used ~Library/Application Support/Firefox/Profiles. Still no luck. 

Could my profile have been moved to another place or could it be hidden? Any help would be greatly appreciated!

Hi,

Youtube won't even load on my computer anymore....this is the message I get when I try.

Secure Connection Failed

An error occurred during a connection to www.youtube.com. PR_END_OF_FILE_ERROR

Error code: PR_END_OF_FILE_ERROR

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem.

Learn more…

I uninstalled and reinstalled the Mozilla Foxfire browser because of challenges with most recent update (i.e. missing horizontal tabs, difficulty finding bookmarks, et al). It is my preferred default browser! Please advise how I may prevent future updates. Thank you in advance. Sincerely, Susan Bryant.

When I try to log into Tangerine bank I get the error. "We're sorry for the inconvenience. This function is currently unavailable. Please try again later."

This issue started Oct-13-2025 and it appears to work when using Firefox ESR 146.01 but not the regular Firefox 146.01 versions. Tangerine is not giving me information on the error and I was wondering if there is a difference between the ESR and regular version that might clear up this issue?

on all New Tabs and too Windows the Weather-Functionality appears wrong. It appears absolutely impossible to change the Weather for the actually location - so it appears as you may delete that future in general