Firefox Support Forum

I cannot access Mozilla via Firefox - issue arose when trying to access add-ons yesterday (25 Jan 2020). Firefox displays the following: "Secure Connection Failed

An error occurred during a connection to addons.mozilla.org. PR_END_OF_FILE_ERROR

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the web site owners to inform them of this problem."

In order to post this, I have had to access the site via Chromium, which also noted a secure connection error. I have used a VPN add-on to secure the connection and access the site.

I assume this is an issue on the Mozilla server with an expired certificate?

When I click ctrl+q by mistake, the browser window with all its tabs is closed immediately, with no warning. This has already made me lose data. is there a way to disable this keyboard shortcut?

Sometimes, when I open the browser, ALL content is not drawn to the window size, as shown in the screenshot. In this case, mouse events are tracked as if everything was drawn correctly, i.e., to the entire size. Only resizing the window helps. How to fix this problem? This happens not only in KDE, but also in GNOME. Clearing the profile didn't help. Running without extensions too. Such a problem still sometimes occurs. OS: ArchLinux https://imgur.com/a/X7Ue9Al

https://support.mozilla.org/en-US/kb/containers seems to suggests that it's possible to hide all tabs in certain containers, but does not explain how to do that.

"Hide and Show: Assume you use your browser for both Work and Personal tasks. When you come home at the end of the day, you don’t want to be thinking about “Work” anymore, but your browser is full of Work tabs. You can “Hide” your Work tabs and proceed with your Personal tasks. Then the next day, when you are back at work, you can “Hide” your Personal tabs and “Show” your Work tabs."

On an aside, I'm also getting pretty confused between collections (mobile), containers (desktop), sessions, tab groups, etc... they all seem to have overlapping but different functionality.

I installed Nightly hoping to be able to play videos. It worked for a while but has recently stopped. I have a screen shot with the error and the version of nightly. I am running Fedora 64 bit with the updates installed.

Hello good people, This is rather a request for advice than an issue report. I' ve learned about the facebook container add-on and wanted to know if there is a need for it if someone was making sure to exclusively open facebook.com in its own profile. Say you set up a profile(from about:profiles) namely "BIg Brothers" for notorious trackers like google, facebook , twitter etc so they can perpetually track each other with simple rules to observe like : - Never open an external(shared) link - Never access any other website through that profile.

Is there a particular feature the add-on is bringing up that the native interface is missing ? The other reason is add-ons are great but they tend to bloat the system impeding the browsing experience. I am the kind of guy who opens 7 concurrent tabs each running heavy js code so the lighter the better.

Thank you in advance,

Dom

Firefox 75.0 has just been released. Address bar has been ruined with dynamic size and lines with increased height. For some unknown reason Mozilla developers think that taking away more vertical space will help their browser have "Focused, clean search experience that's optimized for smaller laptop screens" as they state in the release notes. Outrageous.

Now tell me how to go back to the old behavior.

I want a full horizontal length search result widget as it was before.

I DO NOT want an ENLARGED address bar while searching. Simply annoying that it changes its size and looks like popping out from the upper top toolbar every damn time I type something into it.

I want the ORIGINAL LINE HEIGHT of search results in the expanded address bar.

I want an address bar that doesn't expand when focused with Alt+D, like the old one.

I haven't found an about:config option to restore old behavior. However, a userChrome.css workaround is still good for me.

In the past I was able to set the setting ``` browser.urlbar.clickSelectsAll browser.urlbar.doubleClickSelectsAll ``` to disable that a single click into the address bar selects the whole url. Is it possible to achieve this with the new QuantumBar somehow?

I was messing around with Privacy & Security settings. Under Cookies & Site Data, I checked Delete Cookies & Site Data when Firefox closes. I've decided I don't like it and want to uncheck it. But now it's greyed out and I can't find any way to change it back. It says I'm in permanent private browsing mode. There MUST be a way to change this back to how it was! What is it???

I can't open a Spotify URI from Firefox But I can open it from command line using the --uri option. As in, this works fine from the terminal:

spotify --uri="spotify:artist:6OqhFYFJDnBBHas02HopPT"

and whatever Firefox is doing just launches Spotify without navigating to the thing indicated by the URI

Is there, perchance, a simple file edit I can do that will fix this for me?

I tried adding style to userChrome.css

@-moz-document url-prefix(about:blank) {

   * {
       background: black !important;
   }

}

and https://support.mozilla.org/en-US/questions/1106886 but both did not work. Dark mode extension works after loading a page but not before loading page in new tab.

So the problem is that Firefox doesn't play any HTML5 content. Weirdly except for Youtube. Youtube works just fine. But every other Website shows errors. Even songsterr.com. I'm using latest Firefox 76.0.1 on a recent Ubuntu 20. 04 LTS installation. Usual troubleshooting like updates doesnt work because "sudo apt-get upgrade" doesn't find any updates. I tried the same websites in the latest version of Chromium and they work perfectly fine. I couldn't find a mistake in the firefox settings or something so I'm confused. Disabling Plugins didn't change anything and turning of tracking protection didn't either. What is the Problem here and how can I solve it?

When I download a file (eg. a debian binary package) and click to open it from Firefox' download tab, it doesn't use the system default application (here, Ark instead of QApt)

Hello,

Sometimes Firefox is having a wrong IPv6 in cache. Using the extension SixOrNot, I can see for rss.forumanalogue.fr the following IPv6 2001:41d0:fecf:8900:216:3eff:fe65:97bc, with the note "Cache". However, this IP corresponds to toot.forumanalogue.fr and the actual IPv6 for rss.forumanalogue.fr is 2001:41d0:fecf:8900:216:3eff:fef1:20a2. In order to temporary fix the issue, I perform a dig and it solves the issue for a while.

It is a rather new issue (few weeks).

What is going on?

I am unable to connect to the following URL https://lakmshaegov01.msha.gov/UserManagement/ChangePassword.aspx. All other browsers seem to work.

I ran an SSL Labs test and it confirms that all tested versions of Firefox fail. I would like to know if anyone can spot something that might allow me to connect by temporarily relaxing the security checks in Firefox for this site.

I am running Firefox 76.0.1 on GalliumOS 3.1 on a Lenovo N21. For some reason, my add ons don't show up or work, even though they are installed. Firefox works great on my other two machines, and used to work great on this one. Thank you Jason Stone.

I had set the about:config settings after 75 came out to fix the address bar. Today I got 77.0.1 and now the address bar seems broken again. When I mouse over it, there is no longer a down arrow to click and show my common sites. If I click in the bar and then delete everything, the list of common sites appears. If I click away and click back into the blank address bar, now I have to hit the down arrow to get the list to appear. I need a way to get the down arrow back so the address bar works as expected.

These config options are all set to false:

   browser.urlbar.openViewOnFocus
   browser.urlbar.update1
   browser.urlbar.update1.interventions
   browser.urlbar.update1.searchTips
   browser.urlbar.update1.view.stripHttps

When I try to watch a video on WSHH, I get this error VIDEOJS: ERROR: (CODE:4 MEDIA_ERR_SRC_NOT_SUPPORTED) No compatible source was found for this media. I have DuckDuckGo Privacy Essencials installed, and I also have uBlock Origin installed. I disable both extensions but I still see the same error. I'm on Ubuntu 20.04 LTS, and my Firefox version is 77.0.1 (64-bit) canonical - 1.0

I attach the console log.

I cannot change the playback speed on YouTube recently (about a week). Videos play without issue but using the option to change playback speed does not affect the speed.

Is it a Firefox problem or a YouTube problem? Anyone else experiencing this?

Hello SUMO Team!

  I always had this question but never really asked it. Why isn't DuckDuckGo or a more privacy based Search engine set as default? You even have to manually add Startpage and others... 

 It just hurts me how a privacy browser has the Google search engine as default after all, most people come to Firefox for privacy and Google is the opposite. Maybe one of the developers can change that?

Thank you so much for trying to help me and Stay Safe!