To resolve this issue, you should turn on the password complexity requirement. 1. Open the Group Policy Management Administrative ...

To resolve this issue, you should turn on the password complexity requirement.
1. Open the Group Policy Management Administrative Tool, and then expand your domain.
2. Right click Default Domain Policy, and then click Edit.
3. In Group Policy Management Editor, navigate to Computer Configuration | Policies | Windows Settings | Security Settings | Account Policies | Password Policy.
4. Change the Password must meet complexity requirements policy to Enabled.