New Post: WPP Connect to client

Sorry, i Have already checked that the client PC can show in the WPP with "unkown" not for "Not Install" status

i have drop down part of the log as below where the client PC is "news350.newsdept.local" running in Win XP sp 3
any help?

20/8/2014 14:30:10 Entering Void Display(System.Windows.Forms.DataGridViewSelectedRowCollection)
20/8/2014 14:30:10 Entering Void DisplayInstalledUpdates()
20/8/2014 14:30:10 Entering Microsoft.UpdateServices.Administration.UpdateInstallationInfoCollection GetUpdateInstallationInfo(System.String, System.DateTime, System.DateTime) : news350.newsdept.local
20/8/2014 14:30:11 Entering Void ctxMnuComputer_ItemClicked(System.Object, System.Windows.Forms.ToolStripItemClickedEventArgs) : DetectNow
20/8/2014 14:30:11 Entering Void .ctor() : FrmRemoteExecution
20/8/2014 14:30:11 Entering Wsus_Package_Publisher.Credentials GetInstance()
20/8/2014 14:30:11 lblCredentialNotice has for Text value : Features connecting to remote computers will use the same credentials than the application.
20/8/2014 14:30:11 Entering Void SendDetectNow(System.Collections.Generic.List1[Wsus_Package_Publisher.ADComputer], System.String, System.String) : On 1 computers. With Login :
20/8/2014 14:30:11 Entering Void SendCommand(System.Object)
20/8/2014 14:30:11 news350.newsdept.local
20/8/2014 14:30:11 Entering System.Net.IPAddress GetIPv4Address()
20/8/2014 14:30:11 **** 無法識別這台主機。
20/8/2014 14:30:11 Will return null
20/8/2014 14:30:11 Entering Boolean Ping(Int32, System.Net.IPAddress)
20/8/2014 14:30:11 Will return false
20/8/2014 14:30:11 news350.newsdept.local don't Ping
20/8/2014 14:34:38 Entering Void btnClose_Click(System.Object, System.EventArgs)
20/8/2014 14:34:46 Entering Void ctxMnuComputer_ItemClicked(System.Object, System.Windows.Forms.ToolStripItemClickedEventArgs) : DetectNow
20/8/2014 14:34:46 Entering Void .ctor() : FrmRemoteExecution
20/8/2014 14:34:46 Entering Wsus_Package_Publisher.Credentials GetInstance()
20/8/2014 14:34:46 lblCredentialNotice has for Text value : Features connecting to remote computers will use the same credentials than the application.
20/8/2014 14:34:46 Entering Void SendDetectNow(System.Collections.Generic.List1[Wsus_Package_Publisher.ADComputer], System.String, System.String) : On 1 computers. With Login :
20/8/2014 14:34:46 Entering Void SendCommand(System.Object)
20/8/2014 14:34:46 news350.newsdept.local
20/8/2014 14:34:46 Entering System.Net.IPAddress GetIPv4Address()
20/8/2014 14:34:46 **** 無法識別這台主機。
20/8/2014 14:34:46 Will return null
20/8/2014 14:34:46 Entering Boolean Ping(Int32, System.Net.IPAddress)
20/8/2014 14:34:46 Will return false
20/8/2014 14:34:46 news350.newsdept.local don't Ping
20/8/2014 14:34:51 Entering Void btnClose_Click(System.Object, System.EventArgs)
20/8/2014 14:34:55 Entering Void .ctor() : FrmSendDebugInfo
20/8/2014 14:34:57 Entering Void lnkLblShowInformations_LinkClicked(System.Object, System.Windows.Forms.LinkLabelLinkClickedEventArgs)