Must do Before creat user active directory on windows server 2012

1. Open the Administrative Tool

2. This places you in the Administrative Tools section. Select Local Security Policy.
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3. Change the password Must Meet Complex Requirements option to Disabled.

In a Domain Environment, for an Active Directory Domain Server.

• In the Server Manager click on Tools and from the drop down click Group Policy Management
• Expand Forrest >> Domains >> Your Domain Controller.
• Right click on the Default Domain Policy and click on the Edit from the context menu.
• Now Expand Computer Configuration -> Policies -> Windows Settings -> Security Settings -> Account Policies -> Password Policy
• Double-click on the Passwords Must Meet Complexity Requirements option in the right pane.
• Select Disabled  under define this policy setting:
• Click Apply then OK all the way out and close the GPO window.
• In order to refresh the policy type the following command: “gpupdate /force”  in the CMD window and click ENTER.