安装了vs2015后,vs2012 启动后报错: aps.net4.0/4.5尚未在web服务器上注册解决办法:下载微软补丁: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参考:http://blog.csdn.net/guochunyang/article/details/49903645