This policy setting determines whether a domain member can periodically change its computer account password. If you enable this policy setting, the domain member will be prevented from changing its computer account password. If you disable this policy setting, the domain member can change its computer account password as specified by the Domain Member: Maximum machine account password age setting, which by default is every 30 days. Computers that cannot automatically change their account passwords are potentially vulnerable, because an attacker might be able to determine the password for the system's domain account. This policy setting determines whether a domain member can periodically change its computer account password. Fix: (1) GPO: Computer Configuration\Windows Settings\Security Settings\Local Policies\Security Options!Domain member: Disable machine account password changes (2) REG: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Netlogon\Parameters!disablepasswordchange