ASP.NET Development Server failed to start listening on port

今天打开Website时，按F5调试和点一个.aspx文件右键点View in Browser时都提示下面的错误： --------------------------- ASP.NET Development Server --------------------------- ASP.NET Development Server failed to start listening on port 3417. Error message: An attempt was made to access a socket in a way forbidden by its access permissions --------------------------- OK --------------------------- 最后找到了解决方案如下： 1. 选中Web Project, 按F4 2. 属性中把Use dynamic ports改为false 3. 给Port number指定一个新的 4. 按F5 来run，就好了