Firefox Community Forum

I got a pop-up when windows started that I was using an older version of Firefox and my bookmarks could become corrupted. It also said that when I updated that my data/bookmarks would transfer, now all my history, logins and bookmarks are gone. I can't believe I have to put this on a forum, I need actual support.

I opened firefox this morning on my laptop and it froze and shut down. When I opened firefox again it opened as a new window and all of my tabs and tab groups were gone. They do not show up in my history or recently closed tabs. Previous session is shown as current session so no option to restore.

Is there any other way to get these back?

Cannot log in to Xcel Energy web page after resent Firefox update: the error code is The requested URL was rejected. Please consult with your administrator.

Your support ID is fa42d3aa-1a9d-4b8f-a478-529a34e84924 Error 403 - Forbidden F5 site: ch2-chi

Other web sites work fine.

Hello Mozilla Support Community,

We are troubleshooting a cross-origin resource sharing (CORS) issue specifically occurring in recent Firefox releases when processing custom B2B appointment requests.

Setup & Context:

Our production application, Frontline Sales Consultancy (flsc.co.uk), triggers a client-side fetch request to an external CRM gateway.

The request works seamlessly on Chrome and Edge, but Firefox throws an NS_ERROR_DOM_BAD_URI during the OPTIONS preflight check.

Observed Behavior:

Firefox Web Developer Console shows the preflight request failing before headers are evaluated.

Access-Control-Allow-Origin and Access-Control-Allow-Methods are explicitly declared on our origin server.

Does Firefox handle strict MIME-type checking or preflight caching differently for custom HTTPS API endpoints?

Any insights into Firefox-specific CORS strictness or network console debugging flags would be greatly appreciated.

Thanks!

Hi, Apologies I've failed to find a more apt site to post this. The add-on/extension 'Remove Anything' was really useful. I have now discovered profiles and setting some up (they seem great), that and becoming a windows 11 user has caused me to have a hard look at the ones I installed. 1. 'Remove anything' has been great and I've been using it since late 2017 IIRC 2. The author ended support updates in June 2026 and updated the add-on page accordingly and pointed users to an alternative. I have to think this is best practice. We don't need many add-ons that do the same thing but kindly pointing users to a suitable alternative the author wasn't connected to was a helpful move. 3. I couldn't find a place channel to thank the author for their work but certainly appreciate it. 4. if anyone closing or casually reading sees this and could please pass on thanks from a typical domestic user to RoadrunnerWMC PLEASE Do. I greatly appreciate the volunteer efforts that created and run firefox and the big umbrella of related software, ever since the old Netscape days. That includes whoever is dealing this question. Good on you all! Best Wishes. Fiona J.

I'm proud to have been a Firefox user for over 20 years, and I've always managed to overcome any obstacles I've encountered.

My only request is that you allow the built-in browser VPN to be activated on desktop computers in Egypt.

Thank you very much for your efforts!

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

Since you did an update of Firefox I am no longer able to access Yahoo or my Yahoo email which is my primary email Can this be fixed? If not I have no use for Firefox anymore. I have attached a pic of the message I get when trying to access Yahoo.

After the last upate on browser all password disappear. I can`t to create new password and browser don`t ask me to remember password. How to restore my password? It`s don`t synchronysed with browser on the other device!!!

I believe I got an automatic update to Version 154.0 yesterday on my Windows 11 laptop. When I opened Firefox after the update I got stuck

My Bookmarks appear to still be available, but my passwords are gone. The passwords are still available on my iPhone and iPad

I have tried syncing to no avail.

I need my passwords. How can I get them back?