Firefox Support Forum

We have a web site which is working perfect with all other modern browsers except Mozilla's. For this reason we are redirecting the users ,who uses Mozilla browsers, to another page that is saying Mozilla Browsers are not compatible with this web site and please use another browser. But this is not a good user experience and we need help about this problem. The problem is that; on a page there are divs which are hidden by default (with css 'display:none;'),and when a user clicks on a related button, a javascript function named as showhide give response and show the hidden div by making the related div unhidden ( with js command document.getElementById(arguments[0]).style.display = "block";) or on next click ( vice versa with js command document.getElementById(arguments[0]).style.display = "none";) This is working with all other modern browsers except Mozilla's. We tested this situation approximately for 6 months with the most up to date versions of Mozilla but nothing changed. Now we are using version 84.0.2 64 bit but nothing changed. We will be very glad if you can help us about this problem. With our best regards

Hi, It seem that the Firefox.exe was hacked on my PC. Namely, there is no way to get rid of some Turkish webpages like https://www[.]ahaberci[.]com/sifresiz-trabzonspor-konyaspor-canli-izle-bedava-bein-sports-1-canli-yayin-izle-justi-49375h.htm which appear on starting the Firefox. I checked for the malwares the PC with several antivirus software. I uninstalled Firefox and reinstalled it without saving data from the previous versions, with no success. I tried all methods offered by the Firefox Help, but does not work. Please, help me to fix the problem. I am attaching screenshots to illustrate the problem.

Thank you, Katalin

link broken to avoid misclicks and malware -Andrew

I looked around and couldn't find where to file a complaint, but I've seen that someone else did it here before. If this is the wrong place, please forgive my error and make sure it gets to where it should be.

Although I believe Firefox, as the last mainstream browser not owned or operated by a major tech company, is critical to keeping a more independent web, I'm very frustrated with a 'quirk' in developer mode.

It seems to unpredictably, randomly switch to 'original sources'. Normally it is an annoyance, not a critical issue, but this evening I was working on restyling a page's CSS, had gotten a fair chunk of work done, and of course, hadn't saved my progress. When I selected an element and went to edit it, Firefox pulled up the original source instead of the modified files I had been working on, and then overwrote everything that I had previously changed after I made the edit.

The fact that I didn't save my work is on me and I accept that, but the fact that Firefox decided to switch to the 'original source' instead of the modified files I had been working on without problems for over half an hour, and then offered no way to get back to the modifications I had been making, is not.

After experimentation, the 'original source' checkbox doesn't seem to do anything when I toggle it, which indicates to me that it's either buggy or the interface is not clear about what and where things are being changed. I only remember this becoming a problem relatively recently, so I'm willing to give the benefit of the doubt and assume that it's broken, but whether it's a bug or it's intentional behavior, it ought to be changed.

Thanks for your time, attention, and patience.

I want to use HTTPS-Only mode, but Firefox enforces it on my private network as well as the public network. Because I do not have certificates for any of my private network hosts HTTPS-Only mode blocks all internal network traffic. The suggested temporary workaround is impractical. Is there a way for Firefox to check the hosts file for a local name/ip or is there another fix for this?

Greetings, I am trying to fill out a PDF form using Firefox's built in PDF viewer and form editor. I'm running Linux (Ubuntu) with Firefox 84. I am able to successfully view and "Open" the PDF within the browser, and even edit the text properly. However, upon saving or printing, the text gets rendered with a massive font size nullifying the ability to edit in browser. I've been trying to find some online resources without success, and can't seem to find others reporting a similar case.

I've disabled all extensions and restarted Firefox, but did not notice any change in behavior. Any tips for debugging? Attached are two pics of the PDF form while editing, and then the rendered PDF after saving.

I am now seeing the new Firefox print screen when I try to print something from a webpage, but there is something critical missing from that screen. What happened to the "Simplify Page" option?? That, to me, was an incredibly valuable option within Firefox, given that I have to do a lot of printing from websites. Is that option now hidden somewhere in the new print screen, or has it been removed? For me, given what I do, that option is something of a deal-breaker. If Firefox has removed it, I may have to begin using a different browser.

I have had to replace several computers lately, when I restarted loading software onto them, I encountered a problem. I receive e mails with files attached which are Corel Draw files. When I download them they come out as zip files and create a lot of files on the drive which make no sense and have stuff in the files that don't do anything. I reverted over to a different browser that being Microsoft Edge which I don't like but it downloads the file perfectly with no problems.......I have been a fan of Firefox for many years but recently there have been so many changes and up dates that things have been starting to change way to much.... I did go to the list of things to check and did not find anything relating to this problem.

While on firefox my mac computer froze a voice came on and said trojan spyware alert error code ...call this number. I shut down my computer. I am on safari now. how do I get it off and can I open firefox again

This question is on behalf of my mother, who has been using firefox for years and has an extensive 'library' of bookmarks and tags and history that she relies on and doesn't want to lose. She either never has had, or has forgotten, a login password, and when prompted to request a new one, it appears that all her existing history would be wiped. How can she ensure that all the painstaking work to create bookmarks and folders and tagged history is not lost? How can she save this data so as to be sure to be able to access it? Thanks in advance for any tips!

Hi, At Startup Firefox opens the webpage "liberhaber.org". To make change in Options, the access to Startup is blocked. I cannot do any change there. By control of Properties of the Firefox, it should open in an empty page (no specific page is defined). How can I got rid of this page? Thanks, Katalin

Hello i have 3 Firefox accounts with 3 different email addresses i wish to make one Firefox account that will have all the information of the 3 accounts then remove the extra accounts. Your advises will be greatly appreciated.

I recently came back to Firefox but I no longer see a car on any of my delivery maps and I use delivery a lot. Any suggestions on how to fix? Did I miss a setting somewhere?

On Ubuntu 20.04 using Snap 84.0.2 (64 bits) there is something wrong with close button, presented in the attachment.

The X seems corrupted.

Does anyone know how to fix that?

On multiple websites I visit, picture in picture happens automatically when I scroll past a video or click another section of a page. I find it highly annoying and distracting. I would like to disable it completely. How do I do this? I'd appreciate an answer that isn't too technical. Thanks.

I imported my logins.jsons and some were logins.json corrupt

I've gone to a site I used often but autofill isnt working nor passwords.

Do I have to login all over again

Yesterday I shutdown my PC running Ubuntu 18.04 while Firefox had a full screen window on each of my two monitors. When i turned it on today the window on my right hand monitor opened correctly. However, the window on my left hand monitor had these problems (see the uploaded image) it was not full screen. It was split into a window at the bottom of the screen that showed the expected contents and a black window at the top of the screen that took mouse input. Note the 'KCOM webmail...' popup by the mouse cursor over the upper window. A right click on the desktop had no effect on the left hand monitor, as if something considered the window full screen. After restoring down the window on the right hand monitor a right click on that desktop showed the expected menu. I recovered from the problem by moving the mouse cursor over the black window until the 'Maximise' popup appeared and clicking. The window then became full screen and has behaved correctly since. I have xpdyinfo and xwininfo outputs in case they are useful. I upgraded from Ubuntu 16.04 to 18.04 about 2 weeks ago and have been using Firefox almost daily since then. I have often seen it restart correctly when I restart my PC, although perhaps not with two full screen windows. I don't know if this is a known bug. I hope this information is useful.

hi, it is two days my" XDM" addon extension has been disabled on FF browser. i searched whole the internet to find some solutions and i did some staff but nothing resolved the situation, XDM is a video,file downloader extension and after using a long time on FF two days ago got a red sign(due to security concern) is expired or not permitted, i have four other browsers which XDM works fine with them, there is no threat or security case going on with this extension and is not in the mozila banned addons list, i also found it is not available in mozila addons search list, i thought to delete it but unfortunately i missed it and it is gone from FF, everything else is fine just only this ,please tell me me what is going on, thanks.