Disable password complexity

1. Start --> Run --> GPMC.msc

2. Expand 'Forest:' --> Domains --> 'Your Domain'

3. Right click 'Default Domain Policy' and choose 'Edit'

4. Expand: 'Computer Configuration' --> 'Policies' --> 'Windows Settings' --> 'Security Settings' --> 'Account Policy' --> 'Password Policy'

5. On the right pane, double click 'Password must meet complexity requirements'

6. Change to 'Disable'

7. Start --> Run --> gpupdate