Open https://portal.office.com in web browser.
Login with your Google Account
After the first login, you will be asked to setup a backup phone number of backup email address. Because we use Google account to sign-in our Microsoft account, these settings are optional.
To setup a backup phone number, make sure you have your mobile phone with you to receive the code via SMS.
To setup a backup email address, please use your personal email address. The school email address can not be used as backup email address.