Outlook says I'm disconnected when I connect

Aymeric 0 Reputation points
2026-11-10T14:54:55.1366667+00:00

Hello,

I have a connection issue on my corporate microsoft account. Whenever I go to the outlook web client, after filling my credentials I'm redirected to a page that says "you've successfully disconnected from your account". Even after 3 tries, it still shows the same thing. I just can't check my emails, this is very exhausting.

I'm using Firefox (currently on version 159.0.1 but this has been happening forever)

Note that this is just for outlook; other apps such as teams or sharepoint are working fine.

Also note that I can't use the desktop app for reasons related to my company. I have to use the web client.

Do you have any solution or idea to tackle this issue?
Thanks

Outlook | Web | Outlook on the web for business | Sign in
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  1. Deogratias 95 Reputation points Independent Advisor
    2026-11-10T16:06:35.14+00:00

    Hi Aymeric

    The issue you're experiencing is often related to browser cookies, cached sign-in data, or a browser-specific authentication problem, especially since Teams and SharePoint are working normally.

    Try the following:

    1. Open Outlook in a Private/Incognito window and sign in.
    2. Clear cookies and site data for outlook.office.com, office.com, and microsoftonline.com.
    3. Test in another browser, such as Microsoft Edge or Google Chrome.
    4. Temporarily disable privacy/ad-blocking extensions in Firefox.

    If the issue persists across multiple browsers, please contact your Microsoft 365 administrator to review Outlook access policies and sign-in logs.

    Warm Regards

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