In order for pam_ldap to be capable of changing a user's password in Active Directory, the pam_password parameter must be set to

For `pam_ldap` to successfully change a user's password in an Active Directory domain, the `pam_password` parameter in the `pam_ldap` configuration file must be set to `ad`. This specific value signals `pam_ldap` to utilize the appropriate Active Directory password modification mechanism, which differs from standard LDAP password changes.

`win` is not a recognized or documented value for the `pam_password` parameter in `pam_ldap` for Active Directory integration.

While conceptually correct, `active_directory` is not the specific keyword used for the `pam_password` parameter; `ad` is the correct, recognized abbreviation.

Setting `pam_password` to `ldap` would instruct `pam_ldap` to use the generic LDAP password change operation, which is typically incompatible with Active Directory's specific password modification protocol.