To open the domain controller security policy, in the console tree, locate GroupPolicyObject [ComputerName] Policy, click Computer Configuration, click Windows Settings, and then click Security Settings. Do one of the following: Double-click Account Policies to edit the Password Policy, Account Lockout Policy, or Kerberos Policy.Open the Control Panel, click the System and Security category, and click System. Look under “Computer name, domain and workgroup settings” here. If you see “Domain”: followed by the name of a domain, your computer is joined to a domain.
How do I change the security policy for a domain controller?
To open the domain controller security policy, in the console tree, locate GroupPolicyObject [ComputerName] Policy, click Computer Configuration, click Windows Settings, and then click Security Settings. Do one of the following: Double-click Account Policies to edit the Password Policy, Account Lockout Policy, or Kerberos Policy.
What should the default Domain Controller policy (GPO) look like?
The default Domain Controller Policy should consist of the following two settings: While it’s tempting to change the settings of the default GPOs, it is better practice to add or customize the settings in a new GPO, as it will make organising and changing GPO settings easier.
How do I manage configuration settings in a domain environment?
Most Group Policies are well behaved and follow this pattern, but not all of them. The first obvious solution to manage configuration settings in a domain environment is, if you care about a setting, set it in Group Policy so that it will override any local policy settings.
What are misconfigured domain controllers?
Misconfigured Domain Controllers (DCs) present a major security risk for Active Directory. To ensure that your Domain Controllers are configured correctly, you will need to closely review the default Domain Controller Policies, create Domain Controller GPOs (Group Policy Objects) and configure Group Policy Settings.

Below are two helpful articles on a similar topic 👇
How to change the local security policy in Windows 10?How to fix Group Policy mismatch in Windows 10?