Why does outlook sign me out when I try to login using firefox?

Question

Why does outlook sign me out when I try to login using firefox?

MOHANAD HASSAN S BAHSHWAN 0

[NOTE: Please limit answers to Microsoft employees only]

Whenever I try to login to outlook (regardless of browser used), I get:

You signed out of your account

It's a good idea to close all browser windows.

I realize there is a work-around by deleting website data in the browser, however, this isn't a problem the user should be fixing. I believe Microsoft should be looking into this. Even when website data is deleted, it the problem keeps resurfacing almost every couple of days. Can't Microsoft do anything about this? <this is the primary question.

Thanks

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Answer 1

Hi MOHANAD HASSAN S BAHSHWAN,

Thanks for explaining the issue so clearly. I understand why repeatedly deleting website data isn’t an acceptable long-term solution, especially when the problem returns every few days.

The “You signed out of your account” message suggests that the Outlook sign-in session is being rejected or invalidated. Since this happens in multiple browsers, it may be related to the account or authentication session rather than Firefox or Windows 11 specifically.

Could you confirm whether you’re using a personal Outlook.com account or a work or school account? Also, does the message appear immediately after you enter your sign-in details and does the same thing happen in a private browsing window?

If you’re unable to stay signed in, please use the account sign-in helper. If you can access your mailbox, select Help from the top menu, select Help again and enter the issue in the Search Help box. If the suggestions don’t resolve it, scroll to Still need help? and select Yes to submit a support request. Just to set expectations, this is a user-to-user community, so replies cannot be limited to employees and community contributors cannot directly investigate account or server-side issues.

I hope the support team can identify what is repeatedly invalidating the session and help you get this resolved permanently.