Windows Server 2019 maximum age for machine account passwords must be configured to 30 days or less.

Documentable No

Rule ID SV-205911r991589_rule

CCI References

CCI-000366

Discussion

Computer account passwords are changed automatically on a regular basis. This setting controls the maximum password age that a machine account may have. This must be set to no more than 30 days, ensuring the machine changes its password monthly.

Check Procedure

This is the default configuration for this setting (30 days).

If the following registry value does not exist or is not configured as specified, this is a finding:

Registry Hive: HKEY_LOCAL_MACHINE 
Registry Path: \SYSTEM\CurrentControlSet\Services\Netlogon\Parameters\

Value Name: MaximumPasswordAge

Value Type: REG_DWORD
Value: 0x0000001e (30) (or less, but not 0)

Fix Action

This is the default configuration for this setting (30 days).

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Domain member: Maximum machine account password age" to "30" or less (excluding "0", which is unacceptable).