解决asp.net 4.0尚未在web服务器上注册

x86

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1. 运行->cmd

2. cd C:\Windows\Microsoft.NET\Framework\v4.0.30319

3. aspnet_regiis.exe -i

x64

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1. 运行-> cmd

2. cd C:\Windows\Microsoft.NET\Framework64\v4.0.30319

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3. aspnet_regiis.exe -i

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如果是安装.net 4.6.1 产生的问题请下载对应补丁

http://blogs.msdn.com/b/webdev/archive/2014/11/11/dialog-box-may-be-displayed-to-users-when-opening-projects-in-microsoft-visual-studio-after-installation-of-microsoft-net-framework-4-6.aspx