Firefox Support Forum

Hello, Firefox 91.0.2 shows in dev. console: Firefox can’t establish a connection to the server at ws://127.0.0.1

The Private browsing window has the issue too, but i am unsure if it really disable all extensions.

When i use different Firefox profile, then the localhost site i am trying to load is loaded without that error. So how to discover please which FIrefox profile setting is preventing the loading please?

A website MultiSafepay.com has saved my CVV number in Firefox.

How do I edit the autofill data?

I can't get to the same payment page, to be in a position to delete it.

Most links on this matter refer to:

 Options => Privacy & Security => Forms and Autofill

However in my Version: Firefox 98.0.1 (64 bit) running on an up to date Windows 10 this feature is missing or deprecated.

Can anyone say how I could edit/delete this specific entry, or point me in the direction of where this data is stored?

In the mean time I can't recommend using Firefox for entering critical security data, where websites can allow the storage of CVV numbers.

Immediately on update to 96.0 this afternoon, multiple sites failed to load - Google(Maps, News etc), Yahoo, Flightradar24 etc - others partially loaded - then sat there blank. Explanation of errors is NOT clear -

Is it possible to revert to previous version? Everything seems to work fine when using EDGE!

Hello!

I used to be able to open a file (with a program) without it being saved. Ever since 98.0, the "open" option saves the file regardless. I even had to find a work around to get the "What should Firefox do with this file?" prompt.

Is this no longer possible?

Thanks.

Hello, I have folder with old Firefox data, I need Google account name and password, mostly name. How can i decrypt the name from file logins.json or how can I import it to my current Firefox profile? In properties of passwords in Firefox I don't have option to import from file, I don't know how to find option that will let me do it.

Hello, I am a dyslexic user and I am trying to change the font of my menu to open-dyslexic, however i cant figureout how and most of the answers here only answer for changing the size, but not the actual font for the menu bar. How do I change the font of my tabs, bookmarks, and ect? thank you

A website I use frequently has recently been causing error; "Application error: a client-side exception has occurred (see the browser console for more information)." to show up when I visit some of their pages but not all.

Example: https://www.guitarcenter.com/Used/Ibanez/RG5121-Prestige-Solid-Body-Electric-Guitar.gc

The page begins to load and then presents this error. Any help would be appreciated.

Since I updated to Firefox v.91.0 I get this error:

Secure Connection Failed

• An error occurred during a connection to support.mozilla.org. PR_CONNECT_RESET_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.

when ever I try to connect to websites via Firefox only. I've tried many things like reinstalling Firefox and I know its an issue between Firefox and my Antivirus (Kaspersky,) but this didn't happen before Firefox updated to v.19.0 though. I've tried https://support.mozilla.org/en-US/kb/firefox-cant-load-websites-other-browsers-can and many other things but nothing works to fix it. I've switched certificate stores and other 'fixes' I've read on this website and others to no avail. It does this with or without any extensions in Firefox.

This only started when I updated Firefox to version 91.0. It doesn't give an errors/issues on any other browser I've tried so far (MS Edge and Chrome) so must be something with the version 91.0 update?

Any ideas to fix this would be great. Thanks!

My job requires me to download and open files in new tabs consistently. However, when I download these files, I don't want the download panel to obscure my vision. Can I disable it?

My ISP is Plusnet. When I try to access their website using Firefox browser I get the following error:

=====

Secure Connection Failed

An error occurred during a connection to webmail.plus.net. Cannot communicate securely with peer: no common encryption algorithm(s).

Error code: SSL_ERROR_NO_CYPHER_OVERLAP

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

=======

I have reported the problem to Plusnet but they say 'not our problem'. Their reason being that the problem does not occur using Google Chrome.

Can you help please?

While playing one of those free poker games there seems to be excessive RAM memory usage. Nothing else running which can account for it. Also, it shows several Firefox processes while, again, there's only one tab open.

The reason I noticed is that the game which usually runs smoothly began to be choppy/jerky, so I opened Task Manager to have a look. Note: Didn't investigate internet connection speed.

Why is Firefox using so much memory and slowing things down?

I've recently updated to 92.0.1 and I've noticed that when I download a PDF attachment or file that firefox opens in a new tab rather than using the default adobe program. I've looked at settings and applications and changed to to "always ask" but I don t get any option to use adobe to open it or any other program. Also it seems to save the file in the downloads folder as a "firefox html document" and not a pdf file

How do you completely turn off update notifications in Firefox 89? on win 7 pro?

in address bar: type the following:

About:config

press enter [or go to]

choose:

show all

search preference name

app.update.silent

boolean                                  click the + and set it to true

 restart firefox browser and the nag was gone for me.

I saw this posted a few times, BUT they left out important details

after typing in app.update.silent [you must add it by pressing the + sign] yes boolean as the other apps. are set to boolean on my win 7 pro machine. yes I am in America and English is the only language I know. :( [sad isnt it?]

dear ladies and gentlemen,

Firefox has been delivered with the new print dialog since version 82.

I have to print around a hundred PDF files at work (usually only the first page of the document). The new print dialog means that there is a lot more work for me here.

Is it possible to set the "old" system print dialog by default or to instruct firefox to always print only the first page of the document by default?

When I restart my computer firefox keep logging me out at then I need to add email and password, then my bookmarks and plugins very annoying any solutions here ?

Hi, new updates on Version 98.0.1 quite a hassle for me. It auto-download all my files even when I just want to view. Is there any other way to disable this feature? I opened Setting>Download but there is no disable button or checkbox for that. Please help me. Thank you in advance.

I can't seem to disable the certificate verification on Mozilla Firefox. As you can see on the screenshot, the error code is SEC_ERROR_UNKNOWN_ISSUER.

I tried multiple solutions, including :

- https://smallbusiness.chron.com/disable-firefox-rejecting-certificates-59249.html - The three solutions from https://stackoverflow.com/questions/20088/is-there-a-way-to-make-firefox-ignore-invalid-ssl-certificates - https://support.mozilla.org/en-US/questions/1234483 - All of the solutions from https://browserhow.com/how-to-fix-mozilla-firefox-ssl-certificate-error/ - https://itectec.com/superuser/how-to-make-firefox-ignore-all-ssl-certification-errors/

and so on.

Is there a way to disable this for only one website, or at least for all website ? I got a web interface which is self signed (if I understand everything correctly) where we can bypass the certificate "error" but it would be great if I just could configure Firefox to skip it entirely for this interface (as I'm certain it's not insecure and even if it was I'd still use it because I can't use anything else for now.

I know Chrome has a command line which do exactly what I want (--ignore-certificate-errors) but Firefox is a must go for me so I'd prefer to find an option on this browser.

Thank you for your time.

I have lost all sound comming from firefox after disconnecting an audio output device while it was being used.

To be more precise, the output device is shared between two computer via a hardware usb switch. I was a bit to fast switching from one to the other multiple times and all audio bugged for a few second, everything worked after that except for firefox.

I have no sound comming from firefox even when using an some other output (such as a headset from a jack).

Firefox does appear in the volume mixer but no sound to be seen there either. (see attached image where firefox and spotify both are playing music, but only spotify is working as intended). However firefox does not appear at all in eartrumpet's volume mixer

I have tried : - PC reboots - firefox re-install (un-installed, deleted the %appdata%/firefore, before re-installing) - turning FF hardware acceleration on/off - using a different profile (about:profiles) - disabling all plugins - disabling / enabling every audio output in the device manager