Firefox Support Forum

Cannot display my history in my sidebar. Receive this message:

XML Parsing Error: no root element found Location: chrome://browser/content/places/bookmarksSidebar.xhtml Line Number 1, Column 1:

Cannot find a way to fix.

I am writing a program that requires me to detect when a shift key is pressed and do something. Something like

window.addEventListener('keydown', event => console.log(event), false); // expect to see an event logged to console when pushing the "shift" key

This works great on all browsers except Firefox. "alt" and "fn" keys are also not able to be detected on Firefox. Is there some sort of advanced security settings I can disable to let me capture these things?

Thanks in advance.

When I go to firefox preferences and then go to "search," I try to click on the arrow below "default search engine" but nothing comes up. When I try to search in the address bar, it takes me to websites named after the first word I typed. When I tried searching in a separate tool bar, I'd type something, hit enter, and nothing would happen. Please help, this is very annoying because whenever I want to search something I have to type google and then type my question in on the actual google website.

Mac OS 10.10.2 Firefox 78.9

Problem: When I go back from full screen mode, the half top of tabs(more like the 2/3 part to the tab) becomes not clickable. Only way to solve it is just to restart the browser.

There is another thing that could provide a bit more info. No matter whether I've ever made it full screen or not, the 2/3 top area of the tabs will never turn grey when I put my mouse on it.

No add-ons and themes installed. Tried safe mode and it didn't works.

The same bug exists on the other Mac, which runs an older version of firefox.

Hi, I have a sound interface on OS X 10.11 but firefox is stuck with an audio output pair which is not the one i picked on the system.

This results in all my other applications working fine (itunes, vlc etc) but firefox outputing no sound at all.

Do you know how to change the audio output for Firefox on OS X 10.11 ?

many thansks

I cannot find any specific areas in settings that show there is "ad blocking" options. I assume there is no ad blocking options without having to get an ad blocking add on, correct?

I have not been using Firefox long...I'm trying this out as I am used to Brave.

Today on my Netflix I received a "widevineCDM plugin has crashed" message. I went to the plugins and everything is updated even my FireFox. I have uninstalled and re-installed this app, but nothing has helped. Not sure what else to do. Any suggestions would be helpful. Thank you in advance.

I don't need help with any particulary thing but I do have one curious question if I'm allowed to asky here? Sorry if im not suppose too. Will the new design eventually support compact mode becuase I love using that?

I had a lot of plugins that after reinstalling the operating system and logging in to the Firefox account. Too many of my plugins have been removed. I need them. How do I recover?

I have a problem watching video on Netflix and HBO Max. My Firefox is up to date and I checked my settings. But do I really have an up to date Firefox? Is that what's causing me to not watching a show or movie? Or it's a crash that can be fixed?

What can I do? Or what can be done?

Last week (14 April 2021) I was able to watch videos on netflix and hulu. This week (21 April 2021), however, a yellow bar appears across the top of the page, saying, on the left-hand side: "The WidevineCdm plugin has crashed Learn more...", and, on the right-hand side, "[Reload page] [Submit a crash report]". Repeated submissions of crash reports, as well as repeated reloading of the page, results in exactly the same: same yellow bar, same inability to watch videos. Likewise, clicking on "Learn more" merely results in the widevine.com page, which states that the company does not service end-users. In addition, last week (14 April 2021), I purchased a video on youtube, and watched part of it. This week (21 April 2021), wanting to watch the rest of the video, all I encounter is: "Your browser can't play this video. Learn more." Clicking on "Learn more" yields "Your browser is up to date. You can use YouTube's latest features!" Repeat ad nauseam. So, it seems that, even though my browser is up-to-date, I am still unable to watch videos on either youtube, hulu, or netflix.

Before April 21st, 2021 I never had any issues with playing videos on Disney Plus, Netflix, etc. But since Widevine updated I cant play any videos without Widevine crashing. I reload the page (as it suggests) and it still wont work. I refreshed Firefox and that didn't work. I also tried to chat with Widevine but their page said "Widevine is a technology provider and we do not provide support to end users. Please contact your application or service provider for support on your particular issue."

Does anyone know what I can do to solve this problem? I really appreciate your help!

I'm on a Mac and the version Im using is 10.9.5. My firefox browser is 78.10.0esr (64 bit).

I refreshed firefox. When I tried to get into my other platforms some how I am now a mobile user. So I tried to refresh firefox again. Only to discover refresh will not work because firefox thinks I am mobile. I went to config reset the two items back to original settings- help and still I am stuck as a mobile user. I am not sure what else to do

Hi. I tried updating firefox and add-ons. But nothing is working, I keep getting the same error. What can I do? none of the streaming platforms are working. Also, when I go to ¨about firefox¨ it says, it´s updated but under it it says ¨you are currently on the esr update channel¨. What does that mean?

The error message is 'The widevine CDM plugin has crashed'. I see preferences/ extensions and themes/ plug ins and it seems like the widevine CDM plug-in was automatically updated, what should I do. Please I tried every setting, its urgent, help me please ?