Firefox Community Forum

Hi all, I'm having an odd problem. For some time now, whenever I look at a list of programs on my computer, Firefox shows up twice. In the last week or so, a new problem has cropped up. When I click on a link in Thunderbird, Firefox opens, but it's like I'm in a totally new instance of Firefox. My browsing history doesn't exist, it will not remember that I have already told Firefox to always open Zoom when I click on a Zoom link, and if I'm streaming a radio station, that tab will be in a separate window rather than in a new tab as it was before. What's going on here?

For some reason my Firefox has started to become much slower when I view / watch anything in full screen, it doesn't matter from where. A Twitch stream in full screen? The Video Player becomes slow, even using the escape key to leave fullscreen takes a bit. Youtube video in fullscreen? Same thing happens. No matter what site is being used, if I go full screen on any video player, everything becomes suuuper laggy. I've tested other browsers and they don't seem to have that issue so it's not a hardware or connection issue.

After my pc has been on for a while, seemingly random duration, Im not able to open firefox anymore. For example if clicking on a link in discord, or if I close the browser and want to open it again. I've tried refreshing and reinstalling but that didn't help.

Hello everyone I just updated my operating system to refresh Win 11 and downloaded a fresh copy of Firefox signed in The problem I am having is when I switch to a theme it does not stay or show in the tabs Has anyone found a solution?

I had my startup page EXACTLY as I wished with two rows of most often used links to websites. While trying to find a solution to "page jumping" I use Help; "troubleshooting mode" and selected "Restart Firefox in Troubleshooting Mode". It did not solve the page jumping issue but did remove MY customized startup page and I do not how to get it back. I also used "Exit" and restarted Firefox but Firefox set my page to the default start page.

How do I get back to MY old startup page?

This is but one frustrating experience setting up MY computer to perform as I wish ... the computer culture has become "user unfriendly" .... what was once simple is now "too highly geek-ed".

Thanks in advance for your effort in solving yet another Firefox rabbit-hole problem.

You seriously need to remove the AUTOMATIC tab grouping, it's annoying as hell!

I know there's a workaround, but that's beside the point. You don't break into someones home in order to re-organize it, that's just bad practice all around.

working with miro site using firefox is terrible -

- too long downloading and redirecting - half of times strange errors occurs - https://disk.yandex.ru/i/PFQTbYdKGSKS0Q - no problem with chrome or edge - https://disk.yandex.ru/i/XBY6SIzk_gGBYw - just search all troubles - https://www.google.com/search?q=miro+is+not+working+firefox

There going down like flies chief I have no idea how long they'll last or what the root cause is but I have report numbers listed below: bp-6a2f6577-50b4-4503-aa6f-edc0c0250714 7/14/2025, 5:44 AM bp-cca0da19-acc6-4699-b2fd-f78070250714 7/14/2025, 5:44 AM bp-3afd947d-1ab0-4e44-9fee-f4cbb0250714 7/14/2025, 1:05 AM bp-9399b8e9-a389-41bb-9231-a95d50250714 7/14/2025, 3:54 PM bp-8e2c1005-1c7b-49ea-8a50-dbb780250714 7/14/2025, 3:55 PM bp-d270fbee-4e08-4c3b-a6ce-870400250714 7/14/2025, 3:55 PM bp-1cd7a43d-c702-4a15-bb9f-396ef0250714 7/14/2025, 3:56 PM bp-e6cd9efa-9998-4408-872a-713c60250714 7/14/2025, 3:56 PM bp-23709997-e2af-4463-b1ce-b7a4f0250714 7/14/2025, 3:56 PM bp-d46d3db6-876e-4794-a500-f1a590250714 7/14/2025, 3:56 PM bp-723ea32e-8da6-46c0-bbc2-ea5190250714 7/14/2025, 3:56 PM bp-a8860709-a511-44de-9f6a-318560250714 7/14/2025, 3:56 PM bp-fa8c5f4b-5b15-46d1-8df6-ae76f0250714 7/14/2025, 3:56 PM bp-bc81e502-f570-4e59-86b3-e2d720250714 7/14/2025, 3:56 PM bp-ddfeae99-8833-4297-9d0c-010d20250714 7/14/2025, 3:56 PM

Something happens to the images when I upload them to any service in the Mozilla browser. Instead of the image I see a strip. There are no such problems with any other browser. Attached is an illustration.

PC Windows 11 Home Video card MSI GeForce 210 [N210-1GD3/LP] Motherboard MSI PRO H510M-B Intel Core i3-10105F BOX

I'm having major problems with Firefox and was able to use it for a long time and I love the software to death. But it has given this problem that I have run into before which the only way I was able to fix it was a full wipe of my computer to factory settings. So with this I started to troubleshoot on what I could do and reinstall was the first and send commands to refresh the dns but I found to what seems to be a startup incomplete file in the Firefox software and it seems to create itself even when deleted. It could be this which is causing problems but all I know for certain that when I click on Firefox it won't open at all or startup. With the only evidence that it responded from task manager or a popup talking about wanting to refresh Firefox for 0.1 milliseconds