Passwords - enable Self-Service password-resets

Overview: Administrators can enable "Self-Service" password resets for users of Microsoft Office 365 (and Azure AD accounts). This prompts each user to provide a mobile phone number and validate by responding to an SMS message (TXT message). Should the user forget their password or otherwise become locked-out, Administrators can continue sipping their coffee whilst the user is able to reset their password on their own! Here's how to enable this feature:

Begin by logging into the portal as an administrator, then selecting Admin > Security & privacy, then click the link to the Azure AD admin centre

If you have not yet configured the Azure AD settings, which are free to setup, then it can take several minutes for the Azure AD control panel to populate; if asked for an email address we recommend using the same login as the Office 365 portal admin account.

Once logged into the Azure AD portal, select Azure Active Directory > Overview, and click the link Self-service password reset

When the Password Reset card-container is displayed, click Properties and then Everyone. Finally, click Save. When each user next authenticates, such as by logging in at http://portal.office.com, then they'll be prompted to enter/validate their mobile number ready for self-service password resets.