Event code: 3005
Event message: An unhandled exception has occurred.
Event time: 2013-3-17 18:35:31
Event time (UTC): 2013-3-17 10:35:31
Event ID: e7add72591b246c2bf7726afe6747b48
Event sequence: 3156
Event occurrence: 71
Event detail code: 0

Application information:
    Application domain: /LM/W3SVC/834934476/Root-1-130079789098906250
    Trust level: Full
    Application Virtual Path: /
    Application Path: e:\wwwroot\kesion
    Machine name: INTERNET-022B4D

Process information:
    Process ID: 1512
    Process name: w3wp.exe
    Account name: NT AUTHORITY\NETWORK SERVICE

Exception information:
    Exception type: HttpException
    Exception message: The remote host closed the connection. The error code is 0x80072746.

Request information:
    Request URL: http://www.***.com/Admin/refresh/ks.refreshhtml.aspx?ChannelID=3&action=content&ID=3309
    Request path: /Admin/refresh/ks.refreshhtml.aspx
    User host address: 61.131.227.92
    User:  
    Is authenticated: False
    Authentication Type:  
    Thread account name: NT AUTHORITY\NETWORK SERVICE

Thread information:
    Thread ID: 1
    Thread account name: NT AUTHORITY\NETWORK SERVICE
    Is impersonating: False
    Stack trace:    at System.Web.Hosting.ISAPIWorkerRequestInProcForIIS6.FlushCore(Byte[] status, Byte[] header, Int32 keepConnected, Int32 totalBodySize, Int32 numBodyFragments, IntPtr[] bodyFragments, Int32[] bodyFragmentLengths, Int32 doneWithSession, Int32 finalStatus, Boolean& async)
   at System.Web.Hosting.ISAPIWorkerRequest.FlushCachedResponse(Boolean isFinal)
   at System.Web.Hosting.ISAPIWorkerRequest.FlushResponse(Boolean finalFlush)
   at System.Web.HttpResponse.Flush(Boolean finalFlush)
   at System.Web.HttpResponse.Flush()
   at Kesion.Publics.KSCMS.Flush()
   at Kesion.RefreshHtml.RefreshProcess.J3jJK16BF(Int32 , Int32 , String )
   at Kesion.RefreshHtml.RefreshProcess.RSeUf6vIv(Int32 , Int32& , Int32& , DataTable )
   at Kesion.RefreshHtml.RefreshProcess.uVssJtVVd()
   at Kesion.RefreshHtml.RefreshProcess.StartRefresh()
   at Kesion.CMS.Admin_Refresh_RefreshHtml.MgAX8bmim(String , Int32 , Int32 , Int32 , Int32 , String , String )
   at Kesion.CMS.Admin_Refresh_RefreshHtml.Page_Load(Object sender, EventArgs e)
   at System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e)
   at System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e)
   at System.Web.UI.Control.OnLoad(EventArgs e)
   at System.Web.UI.Control.LoadRecursive()
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)


Custom event details:

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请问这是什么原因？

有写入的权限，都可以生成文件。