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I want to never have to touch the preference again.

Hello! Just installed Ubuntu 20.04.4 on my laptop and now find that I'm not able to watch some YouTube videos on Firefox 97. It seems mainly just live streams that I can't watch. When I go to one it shows "Your browser can't play this video...Learn more" in the video window. Clicking Learn More takes me to a page that doesn't explain what the problem is. Any idea what the fix might be? The same videos play just fine on other devices on my network. Any help would be greatly appreciated.

The documentation says to use F11. F11 was removed from ChromeOS. The Full Screen Button on the keyboard will take Firefox out of full screen, but when you try to use it to put Firefox in Full Screen, the window gets slightly larger, and then goes back to its original size.

Other applications seem to be able to go to full screen using the Full Screen key that are running under Linux. For instance, gvim, thunar, meld, and gnucash all will go into full screen with the Full Screen Key.

Hi there,

I'm using my PC for local web development. I use Firefox as my regular browser and recently, in order to distinguish between personal time and development time, I've established a new profile just for development purposes.

The local website I can't reach is "site.local.dev". My OS is Ubuntu 20.04 and that URL points to a local IP on my network (resolved via /etc/hosts file on my PC).

Funny thing is that: - In dev-profile: site.local.dev does not work => "Unable to connect" and the URL bar shows https://site.local.dev even if I force it to http:// - In personal-profile: site.local.dev does work :P

I have tried with CLI tools like "wget", "hosts", "ping", "telnet" and so on and the site loads ok. Even I have used Dillo (damn simple web browser) and the site loads ok also.

Things I've tried so far: - Suggestions at https://support.mozilla.org/en-US/kb/firefox-cant-load-websites-other-browsers-can - Suggestions at https://support.mozilla.org/en-US/questions/1011327 (similar issue, not exactly the same).

It must be a silly thing but I'm out of options now. Perhaps anybody has faced to this situation in the past: any suggestion on this issue?.

Thanks in advance, Ibon.

On Linux Ubuntu 18.04, on my laptop, I have 2 versions of Firefox. Version 85.0.2 which I've been using for a while, and version 97.0.1 which I have just installed. I want to sync the new firefox version with all my data and choices that are on the older version of firefox. I think I am being told to sync my older firefox settings with firefox on my phone. I do not have a phone. I only have 1 laptop. I need help, I don't know how to accomplish syncing with 2 different firefoxes on the same laptop.

Arch Linux/Firefox Nightly 99:

the user agent has a difference of 8 versions with the current version of the browser. Two browsers on the computer - exactly the same in regular Firefox 97.

Cannot get rented/paid Youtube or Netflix video to run. Message "! Sorry, there was an error licensing this video" pops up onYoutube screen every time when hitting play button. "Free" Youtube videos work just fine, paid content gets this message. Have firefox-9.5.0.2.ta.bz2, use Linux updated software. Followed all previous suggested Support, cannot seem to find fixes that included DRM, Safemode switch, etc. Thanks for previous help, still stuck... anymore ideas appreciated. Also, difference between running "normal and beta", please explain, and how to know "differences?"

Few days ago I've got an email from my provider informing mi that, a lot of spam is send from my address and threatening to block mi if I do not remedy this. I've spoken to their support team and they advised mi to change to another browser since they think it is the problem. I don't know what to do, being the Firefox user for more then 20 years I'm very reluctant to change. Any advice will be highly appropriated.

Best regards A.Baranski

Hello, I've had this issue for a long time but now it actually bugged me enough to ask about it.

Let's say I have an app with one set of credentials at https://website1.xyz.com

I also have another web app at https://webmail.xyz.com

Firefox only offers to remember credentials for xyz.com so whenever i access any of those websites above i have to juggle between credentials.

Is it possible for firefox to remember passwords separate for whole FQDN?

There is a known issue for some i3 users that when we click the right-mouse button, the context menu will pop up in a position where the first item in the menu is already highlighted, so when the right mouse button is released, it automatically "selects" that item. So if we want to copy a link, for example, we have to be careful to move the mouse before releasing the button or that link will immediately be opened in a new tab.

What some of us have done in the past is to create a userChrome.css file setting a top (and/or left) margin for that menu, which fixes the issue.

In the latest version(s?) of Firefox, this no longer works (but other userChrome.css rules I have set up continue to work), so I'm assuming that the ID of the context menus has been changed. What is the ID now?

Receiving the following message when trying to log onto well know and compliant crypto website:

403 ERROR The request could not be satisfied. Request blocked. We can't connect to the server for this app or website at this time. There might be too much traffic or a configuration error. Try again later, or contact the app or website owner. If you provide content to customers through CloudFront, you can find steps to troubleshoot and help prevent this error by reviewing the CloudFront documentation.

Never had this problem in recent past, only after updating Firefox to 93 (64-bit) Linux Ubuntu 20.4. I DON'T USE CLOUDFRONT. So what else may be the issue? Thank you.

Firefox currently has a URL color formatting scheme which greys-out all parts of the URL in the address bar except for the top-level domain and the 2nd-level domain (with some exceptions).

I am building a website where my organization-specific domain is NOT located on the 2nd-level domain, but rather on the 3rd-level domain.

I plan to use the domain "obb.ll.land". The "ll.land" part is basically a domain that the Liberland Government operates and from which it sells 3rd-level domains to members of the public. Think of "ll.land" as a temporary ccTLD for Liberland. (ICANN requires countries to be on the ISO-3166 list—which Liberland is not yet on—in order to register an official Internet ccTLD.) Therefore, any domain that is formatted as "[SUBDOMAIN].ll.land" should be presumed to be the foundational domain for a given organization that uses it.

Therefore, when a client sees a Liberlandic website, the domain should have the 3rd-level domain included in the black-text portion of Firefox's URL color formatting scheme. Otherwise the scheme would be misleading about the true nature of the website involved. For example, the 3rd-level domain of "https://www.floating.ll.land/" should be included in the black-text portion. Same with the 3rd-level domain of "https://register.ll.land/". However, as of this writing, no ".ll.land" site has the appropriate URL coloration to my knowledge.

How can I solve this problem? Is there something which developers like me should add to our websites individually, or will Mozilla be responsible for handling this matter?

Thank you all in advance! :)

My old Linux computer died and I have removed the still good SSD from it. I have installed the latest Firefox on my new computer and would like to restore the bookmarks and other saved data to the new computer.

I am running Ubuntu 20.04, the old computer was on Ubuntu 18.04.

Can these things be restored, and if so what do I need to do?

I accidentally unpinned the Google Search shortcut on my Firefox Home. You know, the one that has a little magnifying glass in bottom right of the icon. How can I get it back?

While i was browsing through websites using Firefox, i opened a new tab and got the notification saying something like While you were browsing, Firefox was updated in the background. There there was a button at the bottom saying Restart Firefox. When i clicked on that button Firefox restarted automatically as expected. My question is that now i want to see the Update History of Firefox. So how can i check/see the Update history of Firefox.

I am using Ubuntu 18.01 and Firefox 95.0.1 (64bit)

I am trying to stack the firefox logo on top of the wordmark on the newtab page. I've tried doing using "display: block;" in my userContent.css, but it doesn't work. I'm not super good at CSS, so any ideas?

What is the minimum set of files that I can recreate a FF user profile from?

For example, the official docs say to backup/migrate a user profile by copying the whole directory, but the I'm not interested in the `Crash Reports/` directory, history or any session information.

Based on a post I saw some time ago about Thunderbird user profiles, I would expect that only a few files are actually needed (off the top of my head from the TB example, possibly `cert9.db`, `extensions.json` and `prefs.js`), but I can't find the post again now to double-check and I'm not sure how well it would apply to FF.

So, what files do I need to copy over to a new user profile to retain my:

1. extensions and their preferences
2. Firefox preferences
3. bookmarks

I need to automate the deployment of Firefox along with the extensions. I put three extensions (uBlock, Translate Web Pages, and Auto Tab Discard) in the /usr/share/mozilla/extensions/{ec8030f7-c20a-464f-9b0e-13a3a9e97384}/. All extensions load normally, except Auto Tab Discard. When running firefox with the -jsconsole option, I see what the screenshot shows (the message "Invalid addon ID"). But the installation to user profile is successful. I add the extension ID to manifest.json, and get the following output in the console: addons.xpi-utils WARN addMetadata: Add-on {c2c003ee-bd69-42a2-b0e9-6f34222cb046} is invalid: Error: File /usr/share/mozilla/extensions/{ec8030f7-c20a-464f-9b0e-13a3a9e97384}/{c2c003ee-bd69-42a2-b0e9-6f34222cb046} does not contain a valid manifest(resource://gre/modules/addons/XPIInstall.jsm:669:11) What can go wrong?

System: Debian 11 (bullseye) Firefox version: 91.4.1esr (amd64)

If you need any other information, please ask, I will write it down.