Mozilla Firefox is a free and open-source web browser developed by Mozilla Foundation. It is available for use on Windows, macOS, Linux, and BSD operating systems.

Share tech news, updates, or what's on your mind.

Sign up to Post

Good moning !

I use this code to edit the quantity of products from a button. With Chrome it goes very well but with Firefox it sends me an ajax error.
This happens when I change quantities quickly.
If I click on Chrome several times, everything is fine, but on firefox it crashes.
Can you guide me please?

function BTN_EDT(i){
	var $button = $(this);
	var val_R = document.getElementById("ARR_NumId_" + i).value;
	var val_Q = document.getElementById("ARR_Quantite_" + i).value;
		type : "POST",
        url: '_produit-update.php',
        cache: false,
		data: {val_R:val_R, val_Q:val_Q},
        error: function(e){console.log('Ajax Error',e);alert('Erreur Ajax');},
        success: function(response){console.log('Ajax Success',response); location.reload(true);}

Open in new window

Thank you in advance
CompTIA Cloud+
LVL 13
CompTIA Cloud+

The CompTIA Cloud+ Basic training course will teach you about cloud concepts and models, data storage, networking, and network infrastructure.

None of the Internet browsers is able to launch

I have Windows 10 on my Laptop. Recently I am experiencing issue with Internet Browsers unable to launch (Chrome , FireFox, Internet Explorer).
Initially I thought downloading AVG anti Virus and Malwarebytes were the cause of this issue, but even after I have gone and removed them, the issue is still not resolved.
I tried to restore the system to previous versions, but I do not see a very old date.  the oldest version is 9/20/2019, I went ahead and restored the system to that date version, but it is still has not resolved the issue.

I do not have Windows 10 DVD, I remember it was a free upgrade from Windows 8.1 to 10.
I am not sure if there is a way to repair the OS.  I am writing this question from another computer as my laptop cannot launch any internet Browser.

Any Assistance will be very much appreciated.

Thank you.
We have a Sonicwall firewall and there are NAT working well.

Recently, we need to setup a new NAT (TCP: 19832) from external to our internal server. My setup is as below:

1. Copy other NAT rule, and allow the port, but no luck
2. telnet the port by internal network, it works
3. To setup NAT by tp-link, it works by telnet in external network
4. Change to another tcp port, not luck

I have double check the NAT and firewall rule, there is no hints on it.

Anyone has hints on it? Is there magic difference between TP-Link and Sonicwall NAT (port forwarding)?

I check on firewall, there is activity on hitting the NAT rule, but no traffic...
Hi, I have just noticed that when I try to make Firefox smaller by clicking on the center (square) type icon on the upper right, it just kind of re positions the full screen but does not make it smaller.  I tried it on Chrome and it worked just fine as well as Excel and Word.  I want to have an excel document take up the left half of the screen while I look stuff up in Firefox on the right side of the screen.  I've never run into this before and would appreciate your help.
How do I "unsynk" a laptop from Firefox?  I no longer want it sync to my Firefox settings.
I have Firefox that is work under rdp.
I want to deny users to brows any website except two websites.
how I can do that ? the user should not have permission to edit this latter.
We have an alert that pops up when users are accessing our site through Internet Explorer to let them know they are using an incompatible browser. It should only pop up when the user is using Internet Explorer.

We have a client who uses ELO devices to access our website. They are getting this alert. Our website tracks what type of browser the user logged in with. It is returning Firefox version 47, but they are still getting the alert.

This is the function we use to check the browser the customer is using. The function is being used in a control on the master page.

  Public Shared Function IsInternetExplorer() As Boolean
        Dim isIE As Boolean = False
        With HttpContext.Current.Request.Browser
            If UCase(.Browser) = "INTERNETEXPLORER" Or UCase(.Browser) = "IE" Then
                isIE = True
            End If
        End With
        Return isIE
    End Function

Open in new window

We've tested the website on various browsers, and the alert only pops up on IE, but for some reason our client who uses an ELO device shows the alert. It's not even popping up right away like it's supposed to. It pops up after the user has been logged in for a while and is taking our training. Is there something with ELO devices that alters what browser they are using? We have no way of testing this so we are unsure how to proceed. Is there a way we can correctly detect what browser the ELO is returning?
This problem occurs in Firefox 52 and later.

When this SSI HTML page is served up by the server, the Javascript appears to not execute in Firefox, though it works correctly in my HTML editor and in IE.

<TITLE>Home Page</title>


<!-- Included header file to be inserted below BODY -->

<DIV ID="header">

<script type="text/javascript">
 var image_number = 0;
 var image_count = 10;
 function randomimage() {
 	image_number = 1 + Math.floor(Math.random() * image_count)
  document.write("<img src='/headerimages/header" + randomimage() + ".png'>");
<TD><IMG SRC="/headerimages/rightheader.png"></TD>



<!-- End of included header file.  Content follows. -->

<!-- Content section begins here, below the header -->

<DIV ID="body">

<!-- End of the content section -->


Open in new window

I admit that this Javascript was cookbooked.  I never use it myself, never had any reason to until now.

Side note:  I just need to know what the problem is with the Javascript.  I know that this is not HTML5 compliant and there are probably other issues too.  This is part of a patch being laid atop an old site and it will have to do.
Any prohibition from homeland security that we should not be using chrome and use Firefox. Anyone  please help
Using outlook 2013, hyperlinks do not open.  An error appears as "Your organization's policies are preventing us from completing this action for you." 2019-07-25-Shared.jpghtml.jpg
Also when trying to change default browser, HTML associations setting not selected.
So I have tried re-installing all 3 browsers, IE, Chrome & Firefox.
In registry, pointed .html to Default key "htmlfile".  still same issue.  Also did quick repair on Office
Ensure you’re charging the right price for your IT
Ensure you’re charging the right price for your IT

Do you wonder if your IT business is truly profitable or if you should raise your prices? Learn how to calculate your overhead burden using our free interactive tool and use it to determine the right price for your IT services. Start calculating Now!

Exchange version: Exchange online.

We have a transport rule configured to prepend a disclaimer message to all external mail. It works fine in IE, Edge, Firefox, and the Outlook client - but in Chrome, if the incoming message is less than 6 characters, it wraps around the right side of the disclaimer box (see image). It only does this in chrome. I think it's something to do with the HTML code used for the disclaimer but not sure what exactly it would be. Here's the HTML for the disclaimer:

​<table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 align=left width=`"100%`" style='width:100.0%;mso-cellspacing:0cm;mso-yfti-tbllook:1184; mso-table-lspace:2.25pt;mso-table-rspace:2.25pt;mso-table-anchor-vertical:paragraph;mso-table-anchor-horizontal:column;mso-table-left:left;mso-padding-alt:0cm 0cm 0cm 0cm'>  <tr style='mso-yfti-irow:0;mso-yfti-firstrow:yes;mso-yfti-lastrow:yes'><td style='background:#910A19;padding:5.25pt 1.5pt 5.25pt 1.5pt'></td><td width=`"100%`" style='width:100.0%;background:#FDF2F4;padding:5.25pt 3.75pt 5.25pt 11.25pt; word-wrap:break-word' cellpadding=`"7px 5px 7px 15px`" color=`"#212121`"><div><p class=MsoNormal style='mso-element:frame;mso-element-frame-hspace:2.25pt; mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-element-anchor-horizontal: column;mso-height-rule:exactly'><span style='font-size:9.0pt;font-family: `"Segoe UI`",sans-serif;mso-fareast-font-family:`"Times New Roman`";color:#212121'><b>CAUTION: External 

Open in new window


Just looking for thoughts from experts on here.   At work I connect via a citrix server by clicking on firefox and logging in.  The connection is extremely slow in loading things and quite often freezes .

I tried to explain to I.T that when I log in on the company network somewhere else its faster connection but they say it should be the same wherever you go.  Looking in the server room my company has its own rack and my office has a rack within a frame that has all of another companies network ports in it.

I know that there are numerous ISDN lines into it but could it poss be slower as we are using the other companies internet connection and logging in via firefox on a igel?
We have images that are encrypted on our LAN.  I've built a process to pull and decrypt the images.   I then have a web page that will display the images to the user who requested this.  All this works fine in IE 11 (I haven't tried Edge because we are still on Win 7).  Now people are asking for it to work in Chrome and FireFox, where it is not working.  The code that is streaming the image is this:

        Dim bt As Byte() = pfile.FileArray
        Response.ContentType = "image/tiff"
        Response.AppendHeader("Access-Control-Allow-Origin", "*")
        'Response.AppendHeader("access-control-allow-credentials", "true")
            Response.BinaryWrite(deen.DeCrypt(bt, BuildEncKey(LocalFC))) 'This is decrypting and streaming the file (again, works in IE 11)
        End Try

Open in new window

On the page displaying the images, I tried hard coding a call in an image tag tag:

        <img id="tstimg" src="http://mysvr/pullfiles/pullfiles_encimg.aspx?kc=2573863&ekc=3c4c71f8e459d3ed2529c6a05b90956e&ob=028364&rand=20190604083928928" />

Open in new window

But this just shows a broken image in Chrome and Firefox.  My end goal will be setting the URL for the images through JavaScript

                myImg = new Image();
                myImg.src = res[idx].img1;  //A URL like the one in the above img tag
                myImg1 = new Image();
                if (res[idx].img2 != '')
                    myImg1.src = res[idx].img2;  //A URL like the one in the above img tag
                myImg2 = new Image();
                if (res[idx].img3 != '')
                    myImg2.src = res[idx].img3;  //A URL like the one in the above img tag

Open in new window

The above javascript is already in my code and it isn't working in Chrome or FireFox either.  So the ultimate question here is how do I stream the image from my server to Chrome and FireFox?  I really don't want to have to save the decrypted images locally (kind of defeats the purpose of encrypting the image if I end up having a decrypted version sitting on the server).
When we try to see street view of Google maps we are getting "server error, try later." That's been the result 3 days in a row. We have Windows 10 and tried with FF and Chrome. Thanks.
I have a problem with my CSS Treeview. At Internet Explorer 11 the arrows left works fine. But in all other browsers (Edge, Chrome, Firefox, ...) the arrows doesn't transform.

I have extracted the problem from the project.
<!DOCTYPE html>

<html xmlns="">
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
	<link type="text/css" rel="stylesheet" href="./obs_net.css" />

	<div class="webseite">
		<div class="body">
			<div class="body_mitte">
			<ol Class="tree">
					<input type="checkbox" checked id="BP" />
					<label Class="treeview_themenbereich" For="BP">Ebene 1</label>
							<input type="checkbox" checked id="BP022HF" />
							<label Class="treeview_thema" For="BP022HF">Ebene 2</label>
									<div Class="treeview_themendetails_beschriftung"> Beschreibung</div><div Class="treeview_themendetails_wert">Die Beschreibung ist der Oberknüller</div>
									<div Class="treeview_themendetails_beschriftung"> Ziele</div><div Class="treeview_themendetails_wert">Ziele sind da jahaa</div>
									<div Class="treeview_themendetails_beschriftung"> Zielgruppe</div><div Class="treeview_themendetails_wert">Dieses tolle Seminar ist für alle da !!11einseinselfelf</div>
									<div Class="treeview_vedetails_header_rahmen">
										<div Class="treeview_vedetails_header_spalte treeview_vedetails_header_erste_spalte 

Open in new window

I am trying to set my default browser on our remote desktops (server 2016 farm) to Firefox.  

I have followed the KB article of adding to a GPO and creating a Appossoc.xml to be used  Stored the file on the file server in a folder accessible to everyone.

Issue is it does not apply and nothing changes on the user side.

Am I missing something, any ideas?

<?xml version="1.0" encoding="UTF-8"?>
  <Association Identifier=".htm" ProgId="FirefoxHTML" ApplicationName="Firefox" />
  <Association Identifier=".html" ProgId="FirefoxHTML" ApplicationName="Firefox" />
  <Association Identifier=".shtml" ProgId="FirefoxHTML" ApplicationName="Firefox" />

  <Association Identifier=".website" ProgId="FirefoxHTML" ApplicationName="Firefox" />

  <Association Identifier=".xht" ProgId="FirefoxHTML" ApplicationName="Firefox" />
  <Association Identifier=".xhtml" ProgId="FirefoxHTML" ApplicationName="Firefox" />
  <Association Identifier="ftp" ProgId="FirefoxURL" ApplicationName="Firefox" />
  <Association Identifier="http" ProgId="FirefoxURL" ApplicationName="Firefox" />
  <Association Identifier="https" ProgId="FirefoxURL" ApplicationName="Firefox" />
I have a computer that will be being used by another group.  Firefox is the default web browser.  There are several email accounts that have been accessed from this computer.  Once the new group takes it over, only one of the accounts will be necessary.  How can the unwanted email accounts be removed from the sign in screen.  It is the screen just prior to the one attached that contains links to accounts that are no longer required to be accessed from this computer, but will continue to exist.

I have cleared all history from Firefox, but the accounts still appear.
I'm suddenly having problems downloading files. I've tried both Firefox and Chrome. The following is an example of the error I'm getting from the Chrome browser:

The onset of the problem seems to coincide with a recent Windows update. That's pure speculation, of course, but it's the only thing I can think of that has changed on the system.
Google hijacked by

Every time I search using Google in Firefox I get this crap.

In Chrome, it works fine.

How do I get rid of this & prevent it in the future?

HTML5 and CSS3 Fundamentals
LVL 13
HTML5 and CSS3 Fundamentals

Build a website from the ground up by first learning the fundamentals of HTML5 and CSS3, the two popular programming languages used to present content online. HTML deals with fonts, colors, graphics, and hyperlinks, while CSS describes how HTML elements are to be displayed.

VMWare Client Integration Plugin v6.2 (For Internet Explorer 11 and Firefox Ver. 66)
VMWare Client Integration Pluginv6.0 (For Google Chrome Version 73.0.3683.103 (Official Build) (64-bit))
on a
Windows 7 Enterprise SP1 (64-bit) PC.

What Works
- ISO upload to VMWare vCloud Director Catalog works using Internet Explorer 11 only (does not work with Chrome and Firefox) on the PC.

Workaround in place - Console Content Access works for all the same VMs via a Windows Server 2008 R2 Standard Server from within the same environment (setup by someone else not contactable)
(This Server will be decommissioned soon - so need the console working on the PC before the server gets decommissioned)

What Does not work
– VMWare vCloud Director WebMKSConsole Content Access – for any VMs – using any Web Browser (IE, Firefox or Chrome)

Get the following screen – doesn’t matter whether the URL is DNS Name or via IP Address.

Troubleshooting done
-      Added DNS Name to local host file on PC (which made the ISO upload work)
-      Reinstalled VMWare Client Integration Plugin v6.2 , v6.0 and v5.6 after uninstalling, reinstalling and rebooting a number of times.
-      Added Firewall Exclusions on Local PC for all profiles (Domain, Private and Public)
-      Installed the Valid Certificate for FQDN in Automatically Selected Store and the Trusted Root Certificate Store.
-      Tried Troubleshooting described on various VMWare Website and Forums – some were unclear.
-      VMWare …
This one takes the cake. I am obviously missing something obvious.


(1) Simple php program

// proj_summary_mu.php
include "db_connect_nb.php";
$pid = $_GET['pid'];
include "pdf_MU_project.php";
// use fpdf_merge to put together
include "merge_MU_pdfs.php";

Open in new window

(2) File pdf_MU_project.php attached.

Note there is ONE echo in this file. It never shows.

(3) The last few lines of pre_package_mu.php. This is significant, because the real problem shows this as the program being executed, which is NOT true.

	// do the project summaries
	header("Location: proj_summary_mu.php?pid=". $pid);
	//header("Location: package.php?pid=" . $pid);

Open in new window

(4) Browser display of code as run (attached) . Earlier today I had echos that show this; they have bee removed, I have checked source on the server, they are NOT there. I ran it in FireFox AFTER clearing the cache. Don't know how to clear cache in chrome. Ran it there, identical result

As best I can see, this is impossible.
I am trying to convert from Firefox (after maybe 10 - 12 years) to Chrome.

Is there a way in Chrome to put a left sidebar containing bookmarks?

The following partial code represents a Bootstrap 4 form. I am trying to style the placeholder text, but haven't been able to select it.  Using FireFox browser, I've tried variations  of the following: Hopefully anybody show me how this is done.

.l-footer {
  display: flex;
  position: relative;
  flex-flow: column wrap;
  justify-content: flex-start;
  align-items: center;
  background-color: $black-black;

  &-left-section {
    flex-basis: 1 1 0;
    display: block;
    order: 3;
    text-align: center;
    border: .1rem solid $white-white;
    padding: 2rem 3rem;
    margin: 0 auto;
    max-width: 90vw;
    &__form-container {
      min-width: 100%;
      margin-bottom: 3rem;

       &form.newsletter-signup::-moz-placeholder {   /* Firefox 19+   For newer FF also tried  &form.newsletter-signup::placeholder  */
        @media (max-width: 319.98px) {
          font-size: $font-size-base * .65;

Open in new window

<div class="l-footer container-bleed">
        <div class="l-footer-left-section container">
          <p class="l-footer-left-section__newsletter">

          <div class="l-footer-left-section__form-container">
            <form class="newsletter-signup" action="" name="form-signup-newsletter">
              <input type="hidden" name="env_report" value="REMOTE_HOST,REMOTE_ADDR,HTTP_USER_AGENT,AUTH_TYPE,REMOTE_USER">
              <div class="form-group">
                <label class="sr-only" for="input-email">Email</label>
                <input type="email" class="form-control" id="input-email" placeholder="Enter Your Email">

Open in new window

Somehow, when I go to, I now get this.

How do I fix that?

I'm using Firefox, I don't have time to try other browsers.

It’s says can’t find profile when I try to open it. Any advice on how to fix it?






Mozilla Firefox is a free and open-source web browser developed by Mozilla Foundation. It is available for use on Windows, macOS, Linux, and BSD operating systems.

Top Experts In