Failed to load resource: the server responded with a status of 401 (Unauthorized)

Hello
I'm programming in ASP MVC and I'm with the following problem:

I put the DateTimePicker on the page and when I test my LOCALHOST I do not have any problem, but when I publish the page on the server does not leave me icons DateTimePicker, leaving the inspector elements GoogleChrome the following error "Failed to load resource: the server responded with a status of 401 (Unauthorized) "
search the internet some solution and can not find,

I attached the image so you can see the problem and can help me find a solution.

Thanks