Exception : A reference to a higher version or incompatible assembly cannot be added to the project

Question

Whenever I try to add Windows.Web.Http.dll to my windows phone 8.1 application , in my visual studio 2013 environment, I am getting the following exception.

A reference to a higher version or incompatible assembly cannot be added to the project

I don't see any "Unblock" options as many bloggers suggest.

If someone have come across such an error, please share your thoughts.. Thanks in advance

~Sebastian

Answer 1

不要使用“浏览”面板，而是在“程序集”面板中搜索您似乎不支持Windows Phone 8.1项目的Windows.Web.Http.dll。

Answer 2

Windows.Web.Http is not supported in Windows Phone 8 Check the requirement section on below documentation link for Windows.Web.Http

Windows.Web.Http namespace

For windows phone 8 try using System.Net.WebClient .

P:S. I will recommend use Windows phone 8.1

Hope this helps

Answer 3

在Windows资源管理器中找到该文件。右键单击属性，单击“取消阻止”，然后重试。