Firefox Community Forum

for context: my laptop was working/running completely fine last night, as of about midnight (east coast). booted it up around noon today to see that it was super slow and kinda laggy (this is a windows problem, not a firefox one, don't try and fix that, i know it sucks), and that if i restarted/shut down, it would automatically update (not what i wanted). when i did finally begrudgingly restart my laptop, it auto-updated as windows does, and i expected to open up firefox and go on with my day.

unfortunately, it prompted me to make a new user. and when i signed into my firefox account, it treated the browser that i have used for at least 8 months like i had freshly downloaded it. all of my history on here is gone. all of my bookmarks are gone. when i connected my phone to try and sync from what i had left before i updated, all my sync information went down the drain and is completely gone as well. i really don't understand what went wrong here, and i'm honestly devastated that all of my work and my history has to be painstakingly rebuilt.

if anyone has any idea of what happened here, it'd make me feel a little better and try to avoid it in the future.

So, today I found that absolutely all of my tab groups have been wiped from existence. Not passwords, bookmarks, history, extensions or anything of the sort. Just tab groups specifically. Everything else in my profile is still here. I tried restoring from a backup using the Session History Scrounger at https://www.jeffersonscher.com/ffu/scrounger.html but my closest backup was a March 26th one that is missing an entire tab group created after that date.

I tried searching other solutions to my issue, but nothing has worked so far. It doesn't have anything to do with updates as the last one happened on March 26th and I definitely used the tab groups after that point. I'm at a complete loss on what I am supposed to do, as I lost ~600 tabs combined across all groups

When I go to Firefox to check the certificates from Newsmax+, nothing is listed. I tried to log onto the Newsmax+ TV channel, it says that my login values are not valid. Even though I can log onto the website on my computer, and my payments are up to date, I can't get the TV to accept my credentials.

The attached image is what I see.

What do I do now?

After updating to version 149.0, videos on hdrezka.tv do not start after clicking the play button.

Steps to reproduce:

1. Open any video on hdrezka.tv.
2. Click the Play button.

Actual result: The player stays inactive or shows a loading icon.

Expected result: The video should start playing.

Note: I have tested this on version 148.2 and it works perfectly. Upgrading to 149.0 or 150.0 Beta breaks it. Reinstalling 148.2 fixes the issue.

Moderator note: This question has been edited to correct the formatting.

Firefox Search Field changed to a drop-down with Icon + Search Engine Name instead of the previous 3-6 icons on a row with Search Engine Name only appearing when you hover over the Search Engine icon? How do I change Firefox back to the old Search Engine field user interface?

Attached is the new UI which takes up too much screen space if you have a lot of Search Engines installed in the Search Engine Field. I'd like to revert to the old code. If the old code is no longer in Firefox, what version do I have to downgrade to in order to get that old user interface back?

In Firefox version 149, there is an issue with print preview behavior for HTML <select> elements. When opening print preview, all <option> items inside a dropdown are displayed and included in the print output.

This behavior differs from Firefox 148, where only the selected option is rendered correctly during print preview.

Steps to reproduce:

- Create an HTML page with a <select> dropdown containing multiple <option> elements. - Select one of the options. - Open print preview (Ctrl + P).

Expected result: Only the selected option should be visible and printed.

Actual result: All options inside the <select> element are displayed and printed.

Impact: This issue breaks the layout of printed documents and makes forms difficult to read, especially when dropdowns contain many options.

bold textI don't know enough about settings/conflicts to resolve this. I had no problems for years, but this has been an issue for the past six months. AT&T has tried to help, but it just won't work. I have had this email address for almost 40 years, and I really don't want to give it up.

Hello, I'm French and I'm not very good at English I’ve been a Mozilla user for many years and am very satisfied with it. I’m having trouble interacting with the Ohm Energie website. I wanted to sign up for an electricity plan. The Ohm Energie page opened fine in my browser, but as soon as I tried to interact with it—for example, to request a quote—I received the following security notification: “Firefox has detected a potentially serious security issue with espace-client.ohm-energie.com. Someone impersonating the site might try to steal things like credit card information, passwords, or email addresses.” I was forced to use Chrome to sign up for my plan. I’m not the only Firefox user facing this issue. I called Ohm Energie and was told that many other customers have also encountered this problem. I’d like to be able to access my Ohm Energie account via Firefox—what can I do? I should mention that I’m not very experienced in resolving this type of issue. Thank you for your help

When I have set the size of the window and then move the window to the left or right then the application automatically expands the window. I do not want it to do that as I want to be able to have the firefox window where I choose and the size I have chosen, but the program automatically expands the widow to fill the screen.

This has worked fine in the past, and works now in Chrome, but not Firefox. URL is https://outlook.cloud.microsoft/mail/?bO=1&msalAuthRedirect=true&sessionId=20fbbbb0-2fa6-4848-8fec-c20c6d3a8be4

Here's the error message

UTC Date: 2026-03-30T12:16:32.476Z Client Id: 05099EAAAC364C6EBD8115436A25F2D9 Session Id: 20fbbbb0-2fa6-4848-8fec-c20c6d3a8be4 Client Version: 20260320002.06 BootResult: fail Back Filled Errors: Unhandled Rejection: SyntaxError: JSON.parse: unexpected end of data at line 1 column 1 of the JSON data:undefined|undefined:undefined|undefined:undefined|undefined:undefined err: Error: 401 esrc: StartupData et: ServerError estack: y@https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.06b8e674.js:2:299099 165332/E/<@https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.06b8e674.js:2:23542

st: 401 efe: BL0PR02CA0036

La version initiale présentait une page d'accueil personnelle.

La nouvelle (depuis quelque temps) chamboule tout.

Comment faire pour la retrouver et la figer ?

Merci.