You can notify Active Directory users when their password is about to expire by configuring the “Password Policy” settings in Group Policy and enabling the “Password Expiration Notification” feature. Here are the steps to do this:
- Open the Group Policy Management console on your domain controller.
- Create a new Group Policy Object (GPO) or edit an existing one that is linked to the domain or organizational unit where your user accounts are located.
- Navigate to “Computer Configuration” > “Policies” > “Windows Settings” > “Security Settings” > “Account Policies” > “Password Policy”.
- Configure the “Maximum password age” setting to specify the number of days after which passwords expire. For example, if you set this to 90 days, passwords will expire every 90 days.
- Enable the “Enforce password history” setting to prevent users from reusing their previous passwords.
- Enable the “Minimum password age” setting to prevent users from changing their password too frequently.
- Enable the “Password must meet complexity requirements” setting to require users to create strong passwords that meet specific complexity requirements.
- Enable the “Store passwords using reversible encryption” setting only if you have a specific requirement to do so, as this is not recommended for security reasons.
- Enable the “Password Expiration Notification” feature by configuring the “Interactive logon: Prompt user to change password before expiration” setting. Set the value to the number of days before the password expiration date that you want to start notifying users. For example, if you set this to 14 days, users will be prompted to change their password 14 days before it expires.
- Link the GPO to the appropriate domain or organizational unit.
Once you have configured these settings, users will receive a notification when they log in to their Windows computer or remotely access Active Directory resources using their domain credentials. They will be prompted to change their password before it expires, and they will continue to receive notifications until they do so. You can also configure email notifications for password expiration using third-party tools or PowerShell scripts.