Firefox Community Forum

Today, I signed on to use my laptop, as usual, nothing different about how I sat down or anything, and I try to open Firefox and it flashes something on the screen, but I don't catch it as it immediately closes as well. It looked like a popup with a button, if that helps. I then try to open it again, realizing that I've got that bug, the one that causes browsers to open for a split-second and then close immediately, so I try to fix it how I fixed Opera GX before I stopped using that. Restarting? Nothing. Looking online for answers? Found some! I try starting it in Troubleshoot Mode, I can see down in my taskbar that Firefox is trying to open in Troubleshoot Mode but isn't. Okay, let's try something else, the Profile Manager. I use the Windows+R key to open the Run window and type in firefox.exe -p which according to a couple of websites, -This one included- should have opened the profile manager in a popup, but all I get is a flash of a window and nothing else. Then, I finally try uninstalling and reinstalling the app, upon reinstallation it asks if I want to keep my settings and whatnot, I say yes, problem persists. I uninstall and reinstall again, only this time declining the ability to keep my settings, the problem persists.

I'm extremely confused as to why nothing is working, and I don't want to have to reinstall Windows itself like I saw a comment on Reddit recommend, so if anybody has a slight idea of a solution, I'd be grateful, thank you in advance.

Edit: Just tried downloading and running Chrome, it worked for a second until it randomly closed, I know this isn't the support site for that browser, but I thought I'd mention that the "Not opening, just falshing for a millisecond" isn't just a Firefox thing for me.

So I was looking at Event Viewer and I have noticed that Firefox Default Browser Agent shows error with EventID: 5, aKa Access Denied.

I tried to google a bit, but couldnt find anything useful, or at least for me.

Then I went to about:config in FF and I have noticed that even if I didnt personally made any edits, when I clicked show only modified preferences, it shows A LOT.

So it makes me to wonder what exactly is this error and why my config have so many modified preferences, even if I didnt modify any >.>

From my desktop, Firefox refuses to connect to Dropbox.com. I get alternating error messages: PR_END_OF_FILE_ERROR SSL_ERROR_RX_RECORD_TOO_LONG

I've disabled extensions, cleared cache and restarted. Nothing has helped.

I also have Firefox on my laptop and have no problems connecting to Dropbox.com

Help. Thanks.

Dear,

i opened my firefox and found my self logged out automaticly

and when am trying to login and enter the activation code sent to my email i recieve this msg

You’ve tried too many times. Please try again ⁨in 5 minutes⁩.

When I try and open Firefox, a window pops up for a millisecond before going off my screen, and firefox doesnt open. This is extremely irritating as i downloaded firefox since I also cant open chrome. Is there a fix to this, I have restarted my computer and have uninstalled and reinstalled firefox.

Thanks, Nathan

Hello Firefox Support team,

This has been an issue sins ever when I use a direct link to either a YT Channel or a Twitch Channel the Sound 100% never works. The sound plays for 1 frame and then just goes missing. when I open the Twitch homepage link with a Bookmark the issue does not occur.

p.s this happen with every audio source that I open with a link from my Bookmark. Youtube, Twitter, Twitch, Netflix ... tis super annoying and removes the use of Bookmarks for me. Reloading the site does not fix it, I have to open a new tab for it to work but only when I dont use any Bookmarks. Removing and creating new Bookmarks also does not change anything.

I hope someone can help me.

Is this perhaps because of the email i use for Mozilla login is different? Also Firefox is not my default browser on this windows PC, Microsoft Edge is, (although rarely used) when I do sign in with Edge the login proceeds normally. any suggestions? this is obviously not critical but I am seeking clarification.

Firefox quite often will remove, replace, add, or layer text as I use it. It has been doing this since I first downloaded it, and I haven't had it for long. (I will say that it isn't the first program I've seen do this. the only other program I've seen do this is Zotero.) I'm not doing anything weird with it, it just happens as I use it. Some of the screenshots I've submitted are of what I'm literally typing right now.

I've tried using troubleshoot mode, but it works just fine when I'm using troubleshoot mode, so I can't appropriately use that mode.

Certain colours have changed after an update to version 140.0. Most noticeable (and barely readable for me) is the unvisited textlink colour: it was light grey but is now suddenly light blue/cyan? See screenshot with Google Search as example. How can I change this back? The only place in FF settings for colours is under Contrast settings but that's unusable: it overrides settings of sites, altering their layout. Strangely enough there are no General settings to alter colours?

Greetings,

I'm having issues using Firefox as my primary browser ever since I was recently asked to setup passkey login at work. I'm on Windows 10. This is a virtual passkey that uses my work mobile device as the associated passkey device, which was setup using Microsoft Authenticator. When I attempt to login to my account using Firefox, I am prompted with the message pictured in the attached image (it wants me to insert a USB passkey). However, if I switch my default browser to Edge/Chrome and attempt the same thing, then I do not have this issue. Instead, it allows me to use my phone to snap a QR code and login that way.

Any idea how I can stop Firefox from forcefully asking for a hardware passkey?

Cheers,

I get this error code when I click this link: https://app.getresponse.com/click.html?x=a62b&co=zuZIy&lc=hxmU75&mc=Iu&s=Hb9xCO&u=qU&z=EF9yGAP&

This is for any link on 1Funny.com Newsletter

Using Windows 11 just reloaded on new hard drive (Solid State). Old hard drive took up smoking. This error does not happen on any other site and did not happen before.

Hi,

I started using the 'Vertical tabs' option to manage my tabs. I prefer it over the horizontal bar. However, I noticed that when going fullscreen (F11) the vertical tabs are not removed. This is different from horizontal tabs, which are removed from the UI when you press F11.

I think that's because vertical tabs are tied to the sidebar altogether. Is there an alternative to have the vertical tabs work the same as horizontal tabs?

Horizontal bar behaviour in fullscreen:

- The horizontal bar disappears when going fullscreen (F11) - The horizontal bar reappears when hovering the mouse over the top of the screen (which is great!)

Vertical bar behaviour in fullscreen:

- The vertical bar does not disappear and gets in the way of the fullscreen (F11) experience - Checking the setting "Expand sidebar on hover" does not replicate the behaviour of the horizontal bar reappearing upon hovering the mouse. Instead, the smaller version of the sidebar remains and it expands to it's full size when the mouse hovers over it - The only option is to remove the sidebar altogether, which means going back to horizontal tabs