How to set user Password expiration policy in Office 365 SharePoint
Office 365 organization admin is responsible for setting password policies for users in the organization. In this article, I will show you how to secure against password attacks.
Log in with Global admin in Office 365 Admin Portal Account and Follow the below Approach to Password expiration policy in Office 365
1 Click on the top left App launcher then click “Admin”.
2 Click on Settings under Settings gear icon.
3 Click on Security & privacy tab then “Password expiration policy ” fill Days before passwords expire and “ Days before a user is notified about expiration ” and click on “Save changes” button.