Firefox Support Forum

I had an issue where when I tried to open firefox I received an error that said ""A copy of Firefox is already open. Only one copy of Firefox can be open at a time". After looking at some other support articles I came across this article that appeared to fix the issue after entering a command in terminal https://support.mozilla.org/bm/questions/1254772, and I guess I deleted the wrong version because after being able to reopen my browser I had none of my saved bookmarks, extensions, history, or any other account info.

Is there any way I can recover my lost browser info or am I just completely SOL?

Dear Mozilla Support,

After some update (I think from 89.0.0 version of Mozilla Firefox - this version with new looks of tabs) I notice flickering on the tab when I loading website or refresh website. This looks very strange. Like I said I dindn't notice any issue with flickering on previous Mozilla Firefox versions. Only with these new versions with new look of the tabs. I didn't remember if it was 89.0.0 version or 90.0.0 version. I don't know if it is problem with the machine but I didn't notice this issue on another computer with 90.0.2 Firefox version but with Windows 10 OS. I also noticed this issue with Firefox 90.0.0.2 with Windows 7 OS on another computer so I don't know if this is problem with two computers or Firefox itself. Can you help me?

Yours faithfully, Piotr

I "upgraded to V90. since then, the URL box is highlighted red/grey stripes. The robot head icon is now in the URL box and it says "Browser is under remote control (reason Dev Tools). I've gone in about:config and set all variables to False, yet they reset themselves to true every time. How do I disable the DevTools. Thanks

I'm trying to completely turn off the address search bar function in Firefox. It' so annoying! I go to google. Start to type in the search bar on the page but all my typing ends up in the address bar. So frustrating! If I wanted to search from the address bar I wouldn't have gone to Google to do it. I DON'T want to search from the address bar EVER! So please don't say 'why don't you just..x,y or z'. I've managed to turn off all the address bar suggestions and whatnot with about a dozen different setting which is ridiculous. Turning off the rich results should fix everything but it doesn't. No mater what I try I cannot get text to appear in the Google search bar. So basically Firefox has stolen the functionality of the Google webpage for me. I've been using Firefox for a long time but lately I'm been questioning why a lot. Anyway, any suggestions to stop Firefox from hijacking my search would be appreciated.

On Firefox 90 on Ubuntu 20.04, when a site asks for camera and microphone permissions, it’s not possible to select any device anymore. It just shows the default camera and the default microphone.

Earlier Firefox releases used to show a selection list for the camera and also another one for the microphone.

My default camera is the one built into the laptop and I would like to use an external one that has adequate picture quality.

Can you please help selecting a camera with the new Firefox?

Whenever I open a new tab using the + sign the background color is black. I have tried everything I can think of and what I found on the web. Nothing works I hate the black background. I want white with text in black.

Hey everyone!

I had a quick, and maybe weird, question to ask... is there any way to have two separate bookmark folders that are complete mirrors of each other? For example, if I added a bookmark to one folder, then the other folder would also have the bookmark added to it.

I sure hope the answer is yes! haha. It would really help my bookmark organization OCD! :D

Thanks everyone!

Firefox v90 on a Mac. Continual nag screen popping up telling of an update. None of the solutions presented by top contributors or moderators work. Nothing obvious or suggested in about:config. Nothing about putting policies in .json files in the correct directory.

It is as if Mozilla refuses to let you turn off that nag screen.

Hello.

Up until recently, I could click a link to a locally stored Python source file (.py extension) and it would display as a plain text file in Firefox. This is what I want; e.g., it is a way that I view my notes, refer to examples, and so on.

Starting a few days ago, when I click such a link, I now get a pop-up window with the two options "Open with" or "Save file." I have tried a number of things to get back to the old behavior, including deleting the handlers.json file in my Profile folder, running a full Refresh, and creating a new profile. None of these got me back to the old behavior: displaying the .py file as plain text.

If I set the "Open with" option in that pop-up window to Firefox, I just keep getting the pop-up over and over again, while a new tab is created each time.

Note: if I look at a .py file on GitHub, there is no problem: again, the file just displays.

I suspected this behavior is connected with my having installed the latest version of Python (3.9.6) a few days ago, and I just confirmed this by updating Python on another machine. That is, on the other machine, the .py file would display as plain text until just now, after I update Python there.

So, I believe the Python installation is the cause of the problem, but, nonetheless, it seems to me that I should be able to set (or unset?) something within Firefox to make .py files open as plain text, as they used to.

Any ideas?

Thanks in advance.

Trying to use the seach box in the centre of the Firefox homepage (google search engine) .. everything I type goes up to the address bar . Tried changing settings - I see there's a search box option in the 'tool bar' which looks to be up at the side of the address bar. cant understand why we need another one as well as the one in the centre.

Also by turning off suggestions and not choosing the 'search box option in the 'tool bar' , the address bar is now only accepting URLs so searching isnt working.

So ..1. Is the search box in the centre no use?

        2.  Does search work with all suggestions turned off?

Ever since updating to the most recent version of Firefox, I cannot log into anything related to Google. I can enter my username and password but the "next" or "log in" button or whatever it's called doesn't work at all. The cursor remains as an "arrow" when you hover it over the appropriate button to login and never allows you to click on anything. It's like this regardless if I am logging into YouTube, Google, or Gmail. Other websites could be affected...I don't know. The only way I can access my accounts is to downgrade Firefox to version 90.0.1. Everything seemed to work fine before this last version. I've been using version 90.0.1 for a few days now out of desperation since the most recent version doesn't work. I tried updating just now and even though the update went fine, I still couldn't log in to YouTube or Google.

I just realized too that I cannot access my Microsoft account. When I try to log in, it accepts my credentials but then takes me to the Office 365 Login page as if I never logged in and not to my mailbox. This does not happen on Edge. I don't want to use Edge but between this and the problems with YouTube/Google, I am not seeing many options here.

I'm running Firefox on Windows 10 Pro v1809 64bit.

On a side note: Why does Firefox have to update so much? You guys update this thing and nothing's changed except at times like this when things don't work. That's the only difference I see. I wish you would just stop. Stop having updates every time we turn around---ESPECIALLY if nothing different is happening with the browser. I've used Firefox since it was in a version somewhere in the teens or twenties and honestly, I can't see many differences. This is very much true for the past 20 versions of the browser. I mean... we have 95 primary versions of a browser, not to mention the individual subversions. It's really a hassle.

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.