Firefox Support Forum

I have an issue with Firefox 127 not accepting a session cookie that I use for user authentication. I have an ASP.NET application with a login form that includes fields for login and password, and a submit button. When the button is clicked, an HTTPS/POST request is sent to the server. The server responds and sends back a session cookie named .Cookie.Name with the parameter httpOnly set to true.

When I check in Firefox's Developer Tools under the Network tab, I can see .Cookie.Name in the server response. However, in the Developer Tools under the Storage tab, .Cookie.Name is missing, which prevents the user from logging in. This problem does not occur in other browsers like Chrome or Edge, nor does it occur in Firefox version 126. The configurations for Firefox 126 and 127 are identical.

Could you please assist with this issue?

I maintain application that uses OWIN Microsoft library for authentication. It uses .AspNet.Cookies to pass auth information. For unknown reasons I see that Firefox 127 rejects that cookie. I've tried with SameSite Lax/None/Strict and Secure param but no results. Previous versions and other browsers ( Chrome, Edge Safari ) woks fine. Any idea ?

I've been trying to delete cookies and site data multiple times and it will not delete, even after multiple attempts to fix it. Such as deleting Mozilla folder in file explorer and downloading an extension to delete cookies and cache. Everything else gets deleted fine except for 2 sites.

Whenever i sign into youtube and then close the window when i come back ive been signed out and have to sign in again. i have "delete cookies and site data when firefox is closed" off and dont know what else to do

I have attached images of what slowly occurs when I don't clear my cookies, websites start to slowly and slowly load less and less until they eventually completely break and wont load and I have to clear my cookies, resign into everything. and rinse and repeat every few days or a week, I also attached an image of what the purchase screen is supposed to look like. Looking at this via Microsoft edge

Hello, Firefox keeps signing me out of Google websites like google.com and youtube.com when I close out the browser. I recently switched from Google Chrome and was wondering if this was a Google issue or if it was Firefox. It only keeps me signed out of Google accounts, and keeps me signed in for every other website. I have the "Delete cookies and site data when Firefox is closed" box unchecked and it still keeps me logged out, and I have "cookied" unboxed in my Clear History settings as well. I'd like to have this issue fixed as soon as possible for school-related reasons.

Could you kindly advise? WashingtonPost.com does NOT ask to accept cookies even after I deleted all cookies, website data and cache (but in Opera it does ask for cookies), after Firefox automatically deleting cookies and website data after closing Firefox, and after cleaning cookies, website data and cache with Ccleaner — WHY? Which mechanism of Firefox is exploited by WashingtonPost.com? And what should I do? Thank you!

bold textMy issue is in Firefox I have 2 facebook account my personal one Cindy Betz Kuehl and my game account Cindy Kuehl Duc.  I deleted my cookies on Cindy Kuehl DUC and it deleted my facebook account for Cindy Kuehl  DUC.  I play games on this account and can't figure out how to get this account back.  I need your help please.

Delete cookies and site data when Firefox is closed tab is checked so it should delete cookies, but it doesn't, and when I click on manage data there are still cookies etc. How can I make this automatically delete?