Admins: Reset Office 365 passwords
To reset your own password, see I FORGOT THE USERNAME OR PASSWORD FOR THE ACCOUNT I USE WITH OFFICE.
Are you responsible for resetting passwords for people at a business, school, or nonprofit? If so, you're in the right place! This article is for you.
How to reset a password for someone else
How to reset my own Office 365 admin password
If self-service reset is enabled for your business, you can use that to reset your Office 365 admin password (this doesn't reset your computer password). Click the button below.
Contact another admin in your organization to reset the password for you. It's not working because self-service reset hasn't been turned on for your business.
How to reset all passwords for everyone in your organization at the same time
Sign in with your Office 365 admin account at https://portal.office.com/adminportal/home.
Sign in with your Office 365 admin account.
In the Admin center, click Users.
Choose the box at top to select everyone in your business. Then unselect yourself. You can't reset your own password at the same time you reset everyone else's password.
On the right side of page, choose Reset passwords.
Follow text on rest of page.
How to reset passwords in bulk
Use PowerShell! For the commands, see Set the passwords for multiple user accounts.
For overview information, see PowerShell for Office 365 administrators.
Try this article: I forgot the username or password for the account I use with Office.