[ZT]使用IIS作为宿主的WCF服务出现HTTP Error 404.3 Not Found错误的解决办法

原帖地址：http://www.cnblogs.com/xwendotnet/archive/2008/02/21/1075815.html

错误页面如下，出现这个问题，很大的可能是在iis中没有正确的配置WCF服务，解决的办法也很简单
使用 %Windows%\Microsoft.Net\Framework\v3.0\Windows Communication Foundation目录下的ServiceModelReg.exe程序就好了

首先检测服务状态：
命令: ServiceModelReg -vi
结果: 如果协议都是“未安装”状态 则可以确定是WCF在IIS中没有正确安装

接着安装服务：
命令: ServiceModelReg -i
结果: 如果成功安装，会返回成功信息

再试试服务，应该就可以正常使用了

参考：http://blogs.msdn.com/davidwaddleton/archive/2007/11/02/wcf-and-404-3-errors.aspx

应用程序“Default Web Site/WCF”中的服务器错误

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After building, a WCF service in Windows Server 2003, I thought no big deal, for Windows Server 2008.  I deployed the service on my Windows Server 2008 machine and started getting 404.3 errors only with my WCF service.  After checking that I had all of the necessary dependencies:

• 3.0 Framework
• WCF Activation installed
  • This can be found under  the 3.0 framework options. Depending on your operating system this could be under different locations. 
    • Vista  : Control Panel -> Program and Features -> Turn on/ off Windows Features -> Microsoft.NET Framework 3.0
    • Server 2008 : Server Manager -> Add Features-> .Net Framework 3.0 Features -> WCF Activation

I kept getting 404.3 errors, so I started examining IIS to make sure that the right stuff is registered.  After not finding anything wrong, I started looking at the WCF installation. I found that my WCF services where not installed.  You can do the installation manually by running "ServiceModelReg.exe", which was found at %Windows%\Microsoft.Net\Framework\v3.0\Windows Communication Foundation\.

To check status run:
Command: ServiceModelReg -vi
Result: The expected result if "Default Installation" next to the features shown, otherwise the services are not active. 

To turn on Services:
Command: ServiceModelReg -i
Result: Installation of WCF services in IIS 7(6)

I was then able to immediately test my service and see that I could get to the WSDL.

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It sounds like you might not have ASP.NET 2.0 installed on the computer where you're trying to host the WCF service.  When you load a simple asp.net page, do you see its contents or does the page load as you expect?

 

If the page does not load as you expect, you will want to install ASP.NET 2.0 on the system by doing the following:

1. cd to %windir%\Microsoft.NET\Framework\v2.0.50727
2. run aspnet_regiis -i -enable

ASP.NET 2.0 should now be installed.  The next step is to reinstall WCF so it hooks into the ASP.NET and HTTP pipelines:

 

1. cd to %windir%\Microsoft.NET\Framework\v3.0\Windows Communication Foundation
2. run ServiceModelReg.exe -i -x

The -i switch tells ServiceModelReg.exe to install WCF.  (The -r command you were running before was to reinstall WCF; it sounds like WCF may not have been properly installed previously.)

 

The -x switch tells ServiceModelReg.exe to include the necessary custom action scripts.

 

You can add the -y and -v switches if you'd prefer to supress confirmation (-y) or see verbose output (-v).

 

Your system could have gotten into this state if you installed IIS on the system AFTER WCF was installed.  It could also happen if you had IIS on the system, but never enabled ASP.NET before installing WCF.

 

 

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IIS Hosted Service Fails

NET Framework 3.5

Other Versions

• .NET Framework 3.0

If an IIS hosted service fails you may see any of the following symptoms:

• When browsing to a .svc file, the file is not recognized, the browser shows a blank page, or the text of the file is displayed instead of the service's help page as in the following example.
  

 

<%@ServiceHost language=c# Debug="true" Service="Microsoft.ServiceModel.Samples.CalculatorService" %>