Visual studio 2010 Visual studio 2010错误：从地址下载元数据时出错

我正在尝试向我的WEBModel添加服务引用

但是，当我试图从服务中搜索我的引用时，我收到错误消息：

There was an error downloading metadata from the address. Please verify that you have
entered a valid address.

此外，当我只想打开本地主机页时，我会得到：

我正在寻找解决这个问题的方法，但我没有找到任何与我的案例相关的东西。我更改了webConfig文件并创建了新项目

有人知道如何解决这个错误吗

Server Error in '/' Application.

Configuration Error 
Description: An error occurred during the processing of a configuration file required
to service this request. Please review the specific error details below and modify
your configuration file appropriately. 

Parser Error Message: An error occurred loading a configuration file: Failed to start
monitoring changes to
'\\psf\home\Documents\Visual Studio 2010\Projects\TVProject(2)\TVProject\SL'.

Source Error: 


[No relevant source lines]


Source File:
\\psf\home\Documents\Visual Studio 2010\Projects\TVProject(2)\TVProject\SL\web.config