When the author recently upgraded a company's Windows 2003 server to a domain controller, it encountered a problem, and the company leader did not like to enter a complex password (both uppercase and lowercase letters, as well as numbers) at each logon. When I create an account for them and set up a simple password, I am prompted not to set the password.
I thought that as long as click "Start → run", in the "Run" dialog box type "Gpedit.msc" into the "Group Policy Editor" can be modified, did not think in the Group Policy Editor at all cannot be modified.
After many attempts, the author has found a way to solve this problem, click on "start → settings → control panel → admin tools → domain security Policy", enter "Default Domain security Settings", click "Windows settings → security settings → password Policy", double-click the right window in the "Password must meet complexity requirements" item , a window pops up, the disabled option is selected, and when you click OK, restart your computer. The password length is also set here.