# Password History

## Introduction

> You must have an ABP Team or a higher license to use this module & its features.

The Identity PRO module has a built-in password history function that allows you to enforce password reuse policies for users within your application. It keeps track of users’ previously used passwords and checks this history whenever a user attempts to change their password.  This prevents users from setting a password that they have already used in the past, ensuring that each new password is unique and not a repetition of an older one. 

## Password History Settings

You need to enable the password history and configure related settings:

![identity-pro-module-password-history-settings](../../images/identity-pro-module-password-history-settings.png)

* **Enable prevent password reuse**: Whether to prevent users from reusing their previous passwords.
* **Password change period**: The number of previous passwords that cannot be reused.

When you enable the password history, users and administrators will not be able to reuse their previous passwords when changing/resetting their passwords.

![identity-pro-module-change-password](../../images/identity-pro-module-change-password.png)