Validation message on Login form not shown I am using Drupal 7. When ever I visit site.com/user/login I could see my Login form, thats fine. But when I miss to enter any fields say name and click the login button it does not shows the validation error message. Does any one what the actal problem might be? 

Thanks
Look at the form id for login form. and then try hook_form_alter() in any custom module. 

Add a submit callback or validation callback in which you can check for the empty fields yourself. According use drupal_set_message() to display the error message.