Firefox Community Forum

The recent update has basically wiped out my Firefox information and set-up. I have a lot of critical links set-up in my new tab. It is imperative I get them all back please. This is terrible for me.

I have already done the about:profiles, made new profile, used the file named old Firefox files (dated 03-25-25) but end up with the same crap coming up. How is this possible?

PLEASE help.

Kristi A.

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.

Hi,

Occasionally i get weirdly washed out colors on videos, this seems to mostly happens on my jellyfin instance on high res content. It does not happens on other browser, and the issue is very inconsistent, sometimes disappearing after a reboot, or when refreshing firefox. Same with firefox safe mode sometimes it fixes the issue... and sometimes it doesnt. Disabling or enabling HDR doesnt fix the issue.

I use firefox 141.0b4 and RTX 5070 Ti with the latest driver. Any idea how to fix this? Attached are some screenshots showing the issue

hi, i need help with many visual accessibility items such as dark theme (it does not invert in many sites including this one "support", i need the text to be bolder across websites (not just zoom, and settings dont seem to be working across sites, such as gmail), need accessability shortcut and more. i really dont want to add extensions for every thing, is there a more universal mozilla accessability button/settings i am missing? looking forward to hearing from you. -- E

When following the instruction to sync bookmarks on Android phone it leads me to items that are not there. Open Firefox mobile on phone. Ok. Hit the 3 dots drop down. Ok. Choose sync and save. Not there? I click my email and it shows sync. I click that and it shows the last time I sync my phone. 0 minutes. Ok. It shows a QR code to scan from the Firefox app. It instructs to click ready to scan. That's not there either. If instructions lead you down paths that are not present, the instructions are useless. Anyone else having this experience? Thanks..........

Today randomly i noticed that my bookmark bar is waaay shorter out of the blue, i didn't change or adjust anything, all i do is the updates from mozilla that's all, it was all music it really saddens me because atm it's lost forever, i hope somebody can help me (i don't know since when it disappered i literally just noticed it right now ...)

YouTube videos encoded at 60 frames per second are extremely choppy in Firefox only. Microsoft Edge plays the same videos perfectly.

I have deleted my profile and reinstalled Firefox, updated graphics driver to the latest version, and toggled hardware acceleration on and off. Nothing helps.

I have the newest firebox version and i have you tube connected to the menu bar and 2 icons for it on the desktop i m not sure what if an addon are cause it to stay in full screen screen mode i do not wan it in full scene mode. i have done everything i know how to do to stop it from full screen please how do i get it ti default always just giving you a sample of what Iam getting just a sample of the size i do not have firefox zoomed it is on 100 percent and not zoomed the sixes is 16 and 14 an no larger.

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This what I get many times a week. Can you put a command in your software that I don't give damn load it anyway!

My OS is Linux version 140 -- I don't have the privacy /tracking prevention option your settings advises to use. Please advise why and how I can accomplish this block. Thank you.

Your support page -

Introduced in Firefox version 120, you can make use of Global Privacy Control (GPC) to automatically notify websites not to sell or share information about your browsing session on that website.

GPC operates as a “Do Not Sell” mechanism in some US states such as California, Colorado and Connecticut. It may also be used to indicate an opt-out of targeted advertising or general request to limit the sale or sharing of your personal data in those jurisdictions, as well as in jurisdictions such as the EU, UK, Nevada, Utah and Virginia.

To turn on this preference:

   Click the menu button Fx89menuButton and select Settings.
   In the Privacy & Security panel, scroll down to Website Privacy Preferences and click the Tell websites not to sell or share my data option.
   Close the Settings page. Any changes you've made will automatically be saved. 

My selection list - Website Advertising Preferences Allow websites to perform privacy-preserving ad measurement This helps sites understand how their ads perform without collecting data about you. Learn more