Password Policy Client
The Password Policy Client helps users to choose a compliant password. You do not have to install the Password Policy Client to use Password Policy Enforcer, but the Similarity Rule is only enforced if the Password Policy Client is installed.
The Password Policy Client helps users to choose a compliant password by explaining the password policy to them, and by telling them why their password was rejected. If the Password Policy Client is not installed, then users will see the default Windows error message when their password is rejected.
The Password Policy Client displays the password policy during a password change so that users can see the policy while they choose their password. The Password Policy Client also displays a detailed rejection message to explain why a password was rejected. Both these messages are customizable.
NOTE: The Password Policy Client does not modify any Windows system files. It also does not send passwords or password hashes over the network.