在我的经典ASP代码是这段代码：

' Process @ alerts
Dim objHttp
set objHttp = Server.CreateObject("Microsoft.XMLHTTP")

objHttp.open "POST",strSiteRoot & "handlers/forumalerts.ashx?",false
objHttp.setRequestHeader "Content-type","application/x-www-form-urlencoded"
objHttp.Send "topicID=" & lngTopicID & "&threadID=" & lngLastPostID

set objHttp = nothing

这是向ASP.net ASHX处理程序发送请求.运行时,它会在最终发送错误消息之前挂起很长时间：

msxml3.dll error ‘800c0008’

The download of the specified resource has Failed.

/forum/new_post.asp,line 1036

我已经检查了它发布到的URL,它存在且正在运行.发送的数据也是正确的.

在我全新安装Windows 7之前,它运行良好.由于重新安装它,并再次设置IIS这段代码失败,让我相信它是一个权限/身份错误.

有谁能告诉我是什么原因造成的？我有3个应用程序池：

ASP.net v4.0 (Integrated) (ApplicationPoolIdentity)
ASP.net v4.0 Classic (Classic) (ApplicationPoolIdentity)
DefaultAppPool (Integrated) (NetworkService)

谢谢你的帮助！

编辑：我在日志中发现了这个错误：

Event code: 3005 
Event message: An unhandled exception has occurred. 
Event time: 02/11/2011 14:55:42 
Event time (UTC): 02/11/2011 14:55:42 
Event ID: 4e550d910b934d2781707701f833e18e 
Event sequence: 39 
Event occurrence: 1 
Event detail code: 0 

Application information: 
    Application domain: /LM/W3SVC/1/ROOT-2-129647191892089824 
    Trust level: Full 
    Application Virtual Path: / 
    Application Path: C:\inetpub\wwwroot\ScirraNew\ 
    Machine name: TOM-PC 

Process information: 
    Process ID: 7980 
    Process name: w3wp.exe 
    Account name: NT AUTHORITY\NETWORK SERVICE 

Exception information: 
    Exception type: ArgumentNullException 
    Exception message: Value cannot be null.
Parameter name: String
   at System.Number.StringToNumber(String str,NumberStyles options,NumberBuffer& number,NumberFormatInfo info,Boolean parseDecimal)
   at System.Number.ParseInt32(String s,NumberStyles style,NumberFormatInfo info)
   at System.Int32.Parse(String s)
   at forumalerts.ProcessRequest(HttpContext context) in c:\inetpub\wwwroot\ScirraNew\Handlers\forumalerts.ashx:line 13
   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step,Boolean& completedSynchronously)



Request information: 
    Request URL: http://127.0.0.1/handlers/forumalerts.ashx 
    Request path: /handlers/forumalerts.ashx 
    User host address: 127.0.0.1 
    User:  
    Is authenticated: False 
    Authentication Type:  
    Thread account name: NT AUTHORITY\NETWORK SERVICE 

Thread information: 
    Thread ID: 39 
    Thread account name: NT AUTHORITY\NETWORK SERVICE 
    Is impersonating: True 
    Stack trace:    at System.Number.StringToNumber(String str,Boolean& completedSynchronously)


Custom event details:

第13行是第一个request.form：

int TopicID = int.Parse(context.Request.Form["topicID"]);