How to sign in to Outlook on the web - Microsoft Support
https://prod.support.services.microsoft.com/en-us/office/how-to-sign-in-to-outlook-on-the-web-763fab4d-0138-4814-b450-37fc286bcb79
WebSelect Sign in. (If you're signed into Microsoft365.com, select Outlook from the app launcher.) Note: If you signed in with a Microsoft account such as an Outlook.com, Hotmail, Live, or MSN email account instead of your work or school account, sign out, and then sign in again using the correct account. Not sure which account you're signed in with?
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