Change Password in 365 Login to this URL using Internet Explorer http://portal.microsoftonline.com
Change Password in 365 You will be asked for username and password
Change Password in 365 To change your password, follow these steps: In the Office 365 portal, in the top right corner near your name, click My profile. On the My profile page, click Change password. On the Change password page, type your old password, a new password, and then retype the new password to confirm it. Click Submit.