How to sign in to Outlook on the web - Microsoft Support
Sign in to Outlook on the web with your work or school account. Go to outlook.office.com. If you're not automatically signed in with your work or school account, follow the prompts to enter the email address and password for your work or school account.
Applies To:
Office for business, Office 365 Small Business, Microsoft 365 admin, Outlook on the web, Outlook on the web for Exchange Server 2016