Modify domain password policy

After we install Active Directory, the domain control service will enable automatic password policies, such as password complexity and minimum password length. However, sometimes we want to modify the password complexity requirements.
Log on with the domain administrator account, that is, the domain name \ administrator
1. server console-tools-Group Policy Management (windows server 2008 and 2012), click start → program → Management Tools → click Group Policy Management (windows server2003)
2. In open Group Policy Management, expand Lin → Domain → Group Policy object → right-click Default Domain Policy and select Edit
4. In The Open Group Policy Management editor, expand computer configuration> Policy

5. Expand Windows settings → Security Settings → account policy → Password policy
Password strength and validity period can be set.
6. Run -- CMD: gpupdate/force

Modify domain password policy