我有一个ASP。NET MVC 4解决方案。当我尝试使用Visual Studio 2012打开它时，我得到以下错误:
Microsoft Visual Studio 为ASP配置Web https://localhost:。NET 4.5失败。你必须 手动配置此站点的ASP。NET 4.5才能使站点 正确地运行。无法在https://localhost:44300/上找到服务器 本地机器。确保已配置本地IIS服务器 支持安全通信。
尽管解打开了。此外，当我试图从调试菜单运行它时，我得到以下错误:
无法启动IIS Express Web服务器。 指定的起始URL无效。https://localhost:44300/
我无法调试代码。如何摆脱这些错误和调试/运行网站从VS 2012?
当前回答
Before you try anything else, make sure you 1. restart visual studio (mostly for refreshing memory resident options from files) and 2. restart your system (mostly for invalid file locking). If your problem is such temporary or self-fixed those will do without changing anything. It worked for me with PC restart. Also if you work on a multi-user project make sure you have the latest workable version - someone else may had check in something invalid by mistake at e.g. the project file and you mess with your system for no reason. If those won't work, then you probably need to alter some setting(s) that are stuck, missing or need modification - there are plenty propositions on other answers.
其他回答
在安装Visual Studio 2013 Update 3后，我也遇到了同样的问题。 vs2013无法加载Microsoft.VisualStudio.TraceLogPackage.dll 无法启动IIS Express Web服务器 我的问题是通过以下步骤解决的: 1. 修复Visual Studio 2013更新 2. 以管理员身份启动开发人员命令提示符。 3.输入devenv.exe /setup，然后按enter
我也有同样的问题，原因是标记“覆盖应用程序根URL”是在属性-> Web下设置的 在我删除标志后，IIS Express使用定义的端口正常启动。
除了@Yehuda Shapira给出的答案，我必须做另一个更改，即删除.csproj。用户文件中绑定信息如
<IISUrl>http://localhost:54462/</IISUrl>
存储。删除文件关闭visual Studio，然后重新构建。
我将提出一个解决这个问题的方法:
1.使用以下控制台命令删除\Documents\IISExpress文件夹:rmdir /s /q "%userprofile%\Documents\IISExpress"
Delete the applicationhost.config file which is placed within the .vs\Config\ folder in your Visual Studio project root folder. Change the project’s website random URL: within Visual Studio, right-click to the project node in Solution Explorer, then select Properties; navigate through the Web panel, then change the number in the Project Url textbox value. Add the _CSRUN_DISABLE_WORKAROUNDS Environment System variable with the value of 1 as shown in the following screenshot (thanks to Juan M. Elosegui for reporting this on this SO thread and for the image):
好运！
在我的情况下，我去调试>项目属性> Web(在visual studio)，然后我在服务器部分将IIS Express更改为本地IIS
