This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Hierdie gesprek is in die argief. Vra asseblief 'n nuwe vraag as jy hulp nodig het.

authentication cookie missing for <1% of firefox users

  • 3 antwoorde
  • 4 hierdie probleem
  • 54 views
  • Laaste antwoord deur zeroknight

more options

On our online application we are facing with some strange behavior for a small percentage of our firefox users (<1%).

When doing oauth2 authorization, after generation of the authentication token we redirect to another platform but we are detecting that for a small percentage of Firefox the cookie (my_auth_cookie) with the auth token is not present.



GET: https://www.mywebsite.com/application/login Response:

new location https://www.mywebsite.com/otherapplication/redirect


set-cookie: my_auth_cookie expires=Mon, 04 Dec 2023 13:49:15 GMT; domain=.mywebsite.com; path=/; secure; samesite=lax; httponly


      2. GET https://www.mywebsite.com/otherapplication/redirect
          Set-cookie: mycookie: value
          Host: www.mywebsite.com


In cookie tab I see my_auth_cookie (value: xxxx, domain: .mywebsite.com, expires: Mon, 04 Dec 2023 13:49:15 GMT, httponly: checked, secure: checked,SameSite: Lax, partitionkey: empty, Priority: medium



I’ve tried to replicate but without success (with multiple extensions, including multi-account containers), with multiple configurations of Total Cookie Protection.

Again, this only seems to be happening to a very limited number of firefox users but for these, it happens 100% of the time. We see it occurring for versions 119 and 120 but now and then for older versions.

Feedback reports no extensions&addons.


Any ideas on what we could be dealing with? Any help would be greatly appreciated.

On our online application we are facing with some strange behavior for a small percentage of our firefox users (<1%). When doing oauth2 authorization, after generation of the authentication token we redirect to another platform but we are detecting that for a small percentage of Firefox the cookie (my_auth_cookie) with the auth token is not present. GET: https://www.mywebsite.com/application/login Response: new location https://www.mywebsite.com/otherapplication/redirect set-cookie: my_auth_cookie expires=Mon, 04 Dec 2023 13:49:15 GMT; domain=.mywebsite.com; path=/; secure; samesite=lax; httponly 2. GET https://www.mywebsite.com/otherapplication/redirect Set-cookie: mycookie: value Host: www.mywebsite.com In cookie tab I see my_auth_cookie (value: xxxx, domain: .mywebsite.com, expires: Mon, 04 Dec 2023 13:49:15 GMT, httponly: checked, secure: checked,SameSite: Lax, partitionkey: empty, Priority: medium I’ve tried to replicate but without success (with multiple extensions, including multi-account containers), with multiple configurations of Total Cookie Protection. Again, this only seems to be happening to a very limited number of firefox users but for these, it happens 100% of the time. We see it occurring for versions 119 and 120 but now and then for older versions. Feedback reports no extensions&addons. Any ideas on what we could be dealing with? Any help would be greatly appreciated.

All Replies (3)

more options
more options

Hi, thank you for your reply. We tried multiple configurations of total cookie protection and could not replicate. Feedback from clients is that no specific configurations were used - so we are assuming default values.

more options

Defaults can vary due to rollouts, you can see active ones by visiting about:studies.