Personal Outlook/Hotmail account can sign in on mobile app, but fails on desktop browser (redirect_uri / Exchange error)

Question

I am using a personal Hotmail/Outlook.com account.

I can successfully sign in and use email on the mobile Outlook app (Android/iOS).

However, on desktop browsers (Chrome / Edge), I cannot access Outlook Web.

Even when using Incognito/InPrivate mode, the issue persists.

On desktop, I encounter errors such as:

UserHasNoMailboxAndNoLicenseAssignedError

invalid_request: redirect_uri is not valid

It appears that my personal account is being redirected to Office 365 / Exchange Online (enterprise OWA), even though I do not have any Exchange license.

What I’ve already tried:

Incognito / InPrivate mode

Clearing cookies and site data

Different browsers

Directly accessing https://outlook.live.com

Expected behavior:

A personal account should use Outlook.com consumer backend, not Exchange/Office backend.

Question:

How can I remove or reset any incorrect Office / Exchange binding on my personal Microsoft account so that desktop web login works correctly again?