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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.

For example:
In a system, I have Google Chrome and Firefox,  and I have website abc.com.
How to identify from the which application(Google Chrome and Firefox) the website has been viewed.
Hi Experts,

One of my customers is encountering the following error when accessing our site, https://pavement-science.com.au:

This page can't be displayed
Turn on TLS 1.0. TLS 1.1, and TLS 1.2 in Advanced settings and try connecting to https://pavement-science.com.au again. If this error persists, it is possible that this site uses an unsupported protocol or cipher suite such as RC4 Link for the details), which is not considered secure. Please contact your site administrator.

He gets this error using Chrome and Firefox, but not with IE or Edge.

Hi Team,

I am trying to implement the selenium headless browser test using the phantom js.
Here am able to connect to the endpoint and able to fill the login details but getting the error message after clicking on the submit button.
Error Message:- This part of the site is not reachable.

Am able to do the above operation using the firefox driver and all other web drivers expect headless browsers.

Selenium-java version:- 3.7.1
Phantom Js driver:- 2.1.1
Phantom js pom version:- 1.4.0

Can any help me to solbve this issue.
We're successfully using an Internal CA but have an issue with a single application that requires internal clients to use Firefox. Firefox does not like the certificate produced by the internal CA, and I believe this is due to AlternateSignatureAlgorithm = 1 being set on the CA.

The issue we have is described here:

Windows PKI certificates not trusted due to disabled insecure algorithm.

and here: https://social.technet.microsoft.com/Forums/en-US/eec01ac5-8524-42ac-b2d0-5d3722e077b8/alternatesignaturealgorithm-enabled-on-root-and-sub-cas-causing-issues?forum=winserversecurity

Based on these articles, the solution appears to be

  1. Set AlternateSignatureAlgorithm =  0 in CAPolicy.inf
  2. Update the reg value of the same name here: HKLM\SYSTEM\CurrentControlSet\Services\Certsvc\Configuration\CANAME\CSP to be 0
  3. Renew and resign all certificates

This seems straightforward, but I am concerned as to the impact of doing this on existing services that require certificates. For example, we have numerous Direct Access clients - if their existing Direct Access connections fail due to a change on the CA, then they would not be able to connect in to pick up a renewed/resigned certificate.

Is anyone able to advise if this would be the case, or if we can make the changes without affecting existing services? If we did make the change and this happened, is there any …
Is there any working solution to block AJAX popup divs in Chrome and Firefox?
Dear Experts, I have a weird problem with RDweb and Outlook.

1). Firefox is opened fullscreen on the screen.
2). Above Firefox is Outloko fullscreen aswell.
3). When I hover my mouse over a email and stop moving for 2-4 second. Outlook minimizes
4). At the moment I click or move my mouse again. Outlook jumps back to full screen.

All of this is happening via RDweb.

I may think that this pop-up has something to do with it.
I have a customer who switched their website over to SquareSpace and use a calendar that derives its information from a Google Calendar - everything was working fine until about a week ago when only one person can see the calendar on their system - and only on Firefox, not IE or Chrome.  Other people get a permissions error or says it cannot display in the frame.  I have had them try different browsers, clearing cache/history but same issue.  The link is:  https://www.fpcsiouxfalls.org/calendar/
I do not want my users to right in a iFrame and save the file onto the  computer.

I was able to control it on Chrome web browser but only version 60 and 64 versions of Chrome. I am able to right click in the iframe and save  the document in Internet Explorer and FIrefox browsers.

How can I disable right click in an iframe that display a PDF file or is there any way to ensure that the PDF file being viewed can disable the save/print options.
My domain a 2008 R2 server on a 192.168.0.X.
I can nearly view all webpages but there are a few that have recently started to give errors when I try to access them.
I get the error in firefox or similar on other browsers:
We can’t connect to the server at www.facebook.com.
If that address is correct, here are three other things you can try:

    Try again later.
    Check your network connection.
    If you are connected but behind a firewall, check that Firefox has permission to access the Web.

I suspect it may be a DNS issues bu tsince I can view any other webpage just a few specific how can I tell?
Hi everybody,

I have only one Exchange 2016 CU9 server with all roles. It's working fine.

I have one problem with OWA from external. The external IP of the Exchange server is a NAT in internal server IP.

When I'm in external, if I go on the OWA, I have the form that ask me for the username and password.
I enter the credentials and I have this error. Same problem with Firefox and Chrome.  

If I click on "Refresh the page", owa is displayed and working fine.

I did a lot of tests.
If I did the same thing but i'm waiting 2-3 second before enter my credentials, owa is weel and immediately displayed. It's like there's a timeout.

I don't have problem with Outlook and autodiscover, only this "timeout" with owa.

Do you have an idea ?
Many thanks for your help.
Best regards
I have linus 17, and I use Firefox, I can not get rid of pop ups and I suspect I have multi virus in my computer. The Linus will not allow any kind of self repair of any kind, including online. I have limited income because of Social Security. I have had this for well over two years what can I do in such negative circumstances? Please help, in DIRE NEED IN THE HOOSIER STATE.
Bandwidth much more narrow in Firefox than other browsers..?
When making a bandwidth check with Speedtest.net or Bredbandskollen.se from Edge and Chrome I get 110-125 Mbps in download, while only 15-40 Mbps in Firefox.
PC with Win10 (up to date with Windows Update) and Firefox (also up to date).

No plugins/addons in Firefox to limit bandwidth. No difference when starting Firefox in safe mode either...

Any ideas?
I am working on Firefox automation
When I run
document.elementFromPoint(x, y)
it return XULElement

How can I click on it?
If I run
document.elementFromPoint(x, y).click();
this does not work
In the chrome the enter and space key is working fine on the gear box while pressing tab key on the selection. But for the IE and firefox, the space key is working fine. But the Enter key is not working while pressing tab key on the selection. Here is my code

MainSection: Core.component.PrimaryTile.extend({
    containsBinding: "controller.contentView",
    role: "main",
    classNames: [ "activity-tile", "activity-content-view" ],
    acceleratorKey: [ 'J,V', 'Alt+J,Alt+V' ],
    acceleratorMessage: 'keyboard/main/navigation',
    classNames: [ 'focus-group' ]

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Please help me on this. Thanks in advance
Hi, The checkbox is not getting focus while pressing the Tab keys for the IE and Firefox. But if I press enter or using mouse, the checkbox is working fine. For the Chrome, Its working fine.

IE & Mozzila


I'm really don't know there is having problem with either javascript or CSS.

While Inspect the checkbox Id, its having delete-for-reals

<input name="delete-for-reals" class="ember-view ember-text-field text-field component" id="ember7661" type="checkbox">

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So I have find the id names on my projects in

CSS file as below:

.delete-for-reals img,
.delete-for-reals input {
  vertical-align: middle;
.delete-for-reals .rsuite-message {
  vertical-align: -2px;

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Hbr file:

{{#if view.isReferenced}}
		<p class="delete-for-reals">
			<label for="delete-for-reals">
				{{icon model=view.trashCan size=20}}
				{{view Ember.Checkbox checked=view.deleteMode id="delete-for-reals"}}
				{{#if view.deleteMode}}
					{{message "dialog/destroy/labels/uncheck-to-remove"}}
					{{message "dialog/destroy/labels/check-to-delete"}}

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And Dialog.less file;

.delete-for-reals {
	img, input {
		vertical-align: top;
	.rsuite-message {
		vertical-align: -2px;

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So totally the id available in .css, .hbr and .less files.

Please help me on this. Thanks in advance.
When a stored response is used to satisfy a request without validation, my browser is not showing me the HTTP reponse header field: "Age"?

Just take a simple test.html file, which is chacheable by default. Now visit the page 2 times, so the second time the file is shown directly from cache without validation.

Firefox shows me response headers like this:

Date: Mon, 12 Mar 2018 16:05:18 GMT
Server: Apache/2.4.17 (Unix) OpenSSL/1.0.1e-fips PHP/5.6.16
Last-Modified: Mon, 12 Mar 2018 12:24:12 GMT
Accept-Ranges: bytes
Content-Length: 143
Content-Type: text/html

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But why Firefox does not show me the "Age" header field?

See: https://tools.ietf.org/html/rfc7234

When a stored response is used to satisfy a request without validation, a cache MUST generate an Age header field

And see: https://tools.ietf.org/html/rfc7234#section-5.1

However, lack of an Age header field does not imply the origin was contacted, since the response might have been received from an HTTP/1.0 cache that does not implement Age.

A browser's cache is not HTTP/1.0, so the response headers must contain an Age header field. Firefox is not showing me "Age"?

Are browsers only showing the response and request headers of the server? But if that's the case then they had to show no response headers at all, because there was no response from server in case of "200 OK (cached)"?

So I don't understand this? What's the logic behind this?

P.S. The example was about Firefox, but for example Chrome is doing the same.
I just did a test in Firefox. I have an PHP file (without sessions). The reponse headers do not contain a validator or any other caching related headers, except:

Cache-Control: no-cache

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When pressing the back button in Firefox followed by the forward button, the file is coming from cache when coming back on that page.

With "Cache-Control: no-cache" (and no validators), usually you would expect a request to the origin server, resulting in a "200 OK" response (NOT from cache).

I know that there is some different caching behavior with the back / forward button. See: https://tools.ietf.org/html/rfc7234#page-32

6.  History Lists

User agents often have history mechanisms, such as "Back" buttons and
history lists, that can be used to redisplay a representation
retrieved earlier in a session.

The freshness model (Section 4.2) does not necessarily apply to
history mechanisms.  That is, a history mechanism can display a
previous representation even if it has expired.

This does not prohibit the history mechanism from telling the user
that a view might be stale or from honoring cache directives (e.g.,
Cache-Control: no-store).

Here they are saying that the freshness model does not necessarily apply to history mechanisms. So when using max-age=0 or something like that (Expires), I can understand that the back and forward button can serve stale responses.

But no-cache is not part of the freshness model or is it? …
Firefox on more and more windows 10 Pro machines after Firefox updates give the following error and block ALL sites.  As per Mozzila - it isn't them.

sec_error_bad_signature only via proxy for https website.  I keep seeing this more and more at different sites.  Antivirus totally disabled even.  Chrome/Edge/IE work fine.  Also seeing what appears to be a huge memory leak on Firefox, a browser with no third party plugins and 5 tabs shouldn't use over 2 GB of RAM after a few hours.  Any one have a fix for all sites being blocked?

Hi there:

I have set up a printable page using css which renders well in chrome. However, in Firefox, the header is printing on every page. I tried to switch the tag to div with a class "header" and I got the same issue.  Is there any way to keep the header from printing on page 2 and beyond in firefox?

here is my code:

<!DOCTYPE html>

<meta http-equiv="content-type" content="text/html"; charset=utf-8" />
<meta name="keywords" content="los angeles, hollywood" />
<meta name="description" content="talent and literary management in Hollywood" /> 

<title>XXXXXXXXXXXXXX </title>

<link rel="stylesheet" type="text/css" href="newreelresumecss.css" />
<link rel="stylesheet" type="text/css" href="newreelresumeprint.css" media="print" />

<link rel="shortcut icon" type="image/x-icon" href="archetypeico.ico" />

<link href='https://fonts.googleapis.com/css?family=Lato' rel='stylesheet' type='text/css'>


<a href="http://www.archetypela.com"><img src="largelogo1.svg" width="325" height="69"/></a>
<div id="wrapper"><div id="clientname">XXXXXXX</div>
<nav id="union">XXXXXX</nav>
<nav id="mainbar">
<a href="#reel" >REEL</a>
<a href="#headshot" >HEADSHOTS</a>
<a href="#resume" >RESUME</a>
<span class="anchor" id="reel"></span>
<section id="reels"><div id="reeltitle">REEL</div>
<iframe id="resumeframe" 

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Hi Experts!

I had some issue with the web browser especially in IE and Firefox. for some reason when I refresh the page I get an additional string like this: http://wysiwyg/0/myweb_site.com instead of http://myweb_site.com

Is there a way I can disable wysiwyg in either of those browser or is there a way to prevent that from happening?

Google chrome is the only browser that I don't get this issue. Thanks






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.

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