Admins: Reset Office 365 business passwords
Let users reset their own passwords
We strongly recommend that you set up self-service password reset. This way you don't have to manually reset passwords for your users. To learn how, see Let users reset their own passwords in Office 365.
Reset an Office 365 business password for someone else
These steps are only for people using an Office 365 business plan. To do them, you need to sign in with your Office 365 admin account. What's an Office 365 admin account?
Forgot your Office 365 admin username or password?
Forgot username? Call Microsoft Support.
Forgot password? Here are your options:
Reset all Office 365 business passwords for everyone in your organization at the same time
These steps work for a business with tens of users. If you have hundreds or thousands of users, see the next section on resetting passwords in bulk.
In the Office 365 admin center, go to Users > Active 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.
Reset Office 365 business passwords in bulk
Use PowerShell! Check out this post by Eyal Doron: Managing passwords with PowerShell.
Here's a related article: Set the passwords for multiple user accounts.
For overview information, see PowerShell for Office 365 administrators.
Force a password change for all users in your business
Check out this great blog post by Vasil Michev, Microsoft MVP: Force password change for all users in Office 365.
Try this article: I forgot the username or password for the account I use with Office.
More info on resetting passwords
New to Office 365?