Firefox Support Forum

The screen on my laptop was changed to full screen mode. Now the Firefox icon in the upper left corner is hidden by the full screen so I can't turn it off. How do I do this?

I downloaded a program and I made sure the check boxes asking to install addons were disabled. Next thing I know I had a snap do toolbar on my firefox home page. I went to control panel and uninstalled the toolbar. now when I try to use firefox i get the snap do search page come on.

Where can I find offline installations for Firefox? Please don't say "https://www.mozilla.org/firefox/all/" like the previous 20 or so answers to this question. It simply doesn't work. All you get are Stub installers with no option to download only. I have gone as far as completely trying this and the only thing that I could achieve was to upgrade Firefox on the download computer. Why has this Full install thing been a never ending issue with Mozilla? Is it so hard to list these as well as the Installer version? Many people don't like installers.

I was cleaning out my hard drive and deleting old installs of Microsoft Visual Studio Redistributable packages, and I almost certainly deleted the one that Firefox relies on.

I then attempted to start Firefox, getting the error, "The code execution cannot proceed because VCRUNTIME140_1.dll was not found. Reinstalling the program may fix this problem."

I uninstalled, following the clean install directions, and deleting the "Program Files/Mozilla Firefox/" directory.

Then, I ran the Firefox Installer, newly downloaded, and when running it, it gives the same error, "The code execution cannot proceed because VCRUNTIME140_1.dll was not found. Reinstalling the program may fix this problem." Selecting "Restore Defaults" has no effect either way. The installer then appears to complete in the background, and the Firefox directory is created, along with the executable.

When I run Firefox.exe, it seems to load the program, but any address I type in fails to begin loading. This includes websites (www.google.com) and help/utility pages (about:config). I'm therefore unable to change any settings within Firefox.

I then tried re-installing the "Visual C++ 2008" and "Visual C++ 2015-2019" packages in an attempt to restore that DLL, but that had no effect after repeating the same steps above (clean uninstall, re-install). Which VC++ Redist Package should I be re-installing? Ideally, I should be able to just get a copy of VCRUNTIME140_1.dll and place it where Firefox is looking for it.

Firefox Version 66.0.3 on Win 10 x64

Go to this website: http://guide66.info/foxnewslive/

Video starts to play, then this error appears: the video player failed to load.(Error Code: 101102)

The video plays on other browsers: Chrome, IE, Edge

Thanks for any ideas

Hi Is Firefox portable from this site secure or can I trust this site? portableapps.com I would like to use it on my usb for online shopping :) regards

Hello everyone, sorry for the long post.

For the last 3 days, I have been experiencing a very frustrating issue with videos posted ONLY on Facebook.

Every time I try to open a Facebook video, the Facebook player opens (the one where you can see comments and likes on the right side), and Firefox gives the impression that the video is loading. But after a while, a 'cross' appears in the middle of the screen, below which 'No video with supported format and MIME type found' is written [Kindly refer to the attached screenshot].

Prior to this problem, I had NEVER, in 2 years, experienced any issue whatsoever with playing ANY videos on the Web. Firefox just suddenly decided to stop playing Facebook videos.

WHAT I ALREADY TRIED: - Reload video pages and play them again (FAILED) - Clear cache, cookies and restart Firefox (FAILED) - Start Firefox in Safe Mode (FAILED) - Uninstall Flash Player, try to play videos with the default Firefox player (any video on the Web would play, but Facebook videos FAILED) - Enable the Open H264 Cisco codec (FAILED) - Changing a few values in about:config *(such as media.directshow.enabled) to true/false (FAILED) - Refresh Firefox from https://support.mozilla.org/en-US/kb/refresh-firefox-reset-add-ons-and-settings (FAILED)

ADDITIONAL INFORMATION: - I use Firefox 35.0.1 and have no other browser (besides the default Internet Explorer 6 which I never use) - I use Windows XP SP3 Professional - I have not downloaded/installed any software/extension/add-on which could have caused this problem

I still love Firefox, and have no intention of migrating to a competitor's browser, which is why I hope a prompt solution shall be found. As well, I am not considering dropping XP SP3 anytime soon; it is very stable and fulfills my requirements.

Thanking you for your time.

Firefox is using about 80% of my memory. -I have the latest version of Firefox -No Extensions are Installed.

When opened the same websites on chrome and Firefox, it shows Firefox is using more memory, infact my total.

Websites opened: https://www.gmail.com https://adwords.google.com https://www.wordpress.org https://kretyanews.com https://www.reddit.com/ http://www.cricbuzz.com and https://support.mozilla.org

These are the websites opened on chrome and firefox at same time. moreover , i tried 11 tabs on chrome. but it is using much less memory than firefox. Please see the screenshot

Hi, I have attached 2 screenshots: 1. The background where I want to apply the image in firefox. 2. Chromium after changing the background.

Is there a way to change the background in Firefox to an image of my choice?

I have a Tomcat server which I would like to visit via it's IPv6 address.

In IPv4, I would simply type http://<ipv4-address>:8080 in the URL bar.

In IPv6, I can't seem to find out what I have to type in the URL bar - every request I make sends me to my default search engine.

Among others, I tried the following:

http://[<ipv6-address>]:8080

http://[<ipv6-address>%eth0]:8080

To my understanding of RFC 5952, this should do the job.

However, also skipping the destination port doesn't seem to send me to the server on port 80 or 443:

http://<ipv6-address>

https://<ipv6-address>

I've even tried to add the host in my /etc/hosts, with any of those lines:

<ipv6-address>%eth0 foo

<ipv6-address> bar

Still, requests such as

http://[foo]:8080

http://foo:8080

http://[bar]:8080

http://bar:8080

also don't seem to work.

Firefox version in use is 44.0.2

Thanks for your help!

I understand the newest version of Firefox offers support for WebP images, which is cool and great... but not when I need to download those images for use on my computer. As an artist I need to be able to save things as .jpg or .png for my art programs (or even preview) to be able to open them. Is there any way to make this an option, or to not default to webp when saving images?

I've also tried changing the extension on the file using the "all files" option but it just corrupts the file and won't open them.

newtab.url is locked in about config and keyword.url is also locked , so they can not b resetted.whenever i unistall and install mystart will be there as my default search engine.

Ok I have a new problem with the new Firefox. I just updated my Firefox to the newest version. But while I’ve been using the old version I use a very good feature I liked about Firefox a lot .that was the cache folder and cache files used to create for using software like downloading so many kind of files like videos pictures and any content I’ve browsed on the net by Firefox. All those files been there in a folder in this location (C:\Documents and Settings\A\Local Settings\Application Data\Mozilla\Firefox\Profiles\r52ck3aw.default\Cache) and I could use that to preview all those files but now when I go to that folder there is just like thousands folders and none of my file is there you only can find a few of them. Please don’t tell me that I no longer have that folder and cache files like the old versions? Please help?

I have a report in an email which needs a British pound sign in a password to open it, but my keyboard does not have this sign. I suspect there is somewhere a list of signs I could choose from. How do I find it?