1、vs 打开项目后提示版本未配置
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
https://support.microsoft.com/zh-cn/kb/3002339
原文：http://www.cnblogs.com/eric-gms/p/5639663.html