The page cannot be displayed because an internal server err

Question

The page cannot be displayed because an internal server error has occurred.

I also followup with stackoverflow.com and they said As i am using third part dll dotnetgallery.dll that's why this error is occuring and i need to trusted it from hosting . I am using azure how can i get it done plz help me . I require this dll in my website .

My question at stackoverflow -

stackoverflow.com/questions/28447026/error-the-page-cannot-be-displayed-because-an-internal-server-error-has-occurred