System.Web.Services.Protocols.SoapException: Server was unable to process request

i am using .net webservice for restoring the database in sqlserver. i am using SQLDMO.dll, to restoring database, when i run the app, i getting the following Error.

System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.UnauthorizedAccessException: Retrieving the COM class factory for component with CLSID {10021CC1-E260-11CF-AE68-00AA004A34D5} failed due to the following error: 80070005. at DBReplicatorService.SQLDEMOScripts..ctor() at DBReplicatorService.DBReplicatorService.RestoreDB(String sDBName, String sUserName, String sPassword, String sBackupFileName)

i am using the code as follows to connect Database

Dim objBCPExport As New SQLDMO.BulkCopy2
Public objDB As SQLDMO.Database2
Dim objServer As New SQLDMO.SQLServer2

Public Function ConnectDatabaseWithRefres开发者_JAVA技巧h(ByVal sServerName As String, ByVal sDatabaseName As String, ByVal sUserName As String, ByVal sPassword As String) As Boolean
    Dim bResult As Boolean

    Try
        objServer = New SQLDMO.SQLServer2
        objServer.EnableBcp = True
        objServer.Connect(sServerName, sUserName, sPassword)
        objDB = Nothing
        objDB = objServer.Databases.Item(sDatabaseName)
        objDB.DBOption.SelectIntoBulkCopy = True
        bResult = True
    Catch ex As Exception
        bResult = False
    End Try

    Return bResult
End Function

same code when i use in my localhost it is working fine(it contains sql server 2005), and when i use it in hosting server(it contains sql server 2008) i getting the above Error

I getting the error in these variable initialization.

Dim objBCPExport As New SQLDMO.BulkCopy2

and connection string i am using is

     Dim cnnNewDB As New SqlConnection("Data Source=" + pServer + "Initial Catalog="    +   pDatabase + ";Persist Security Info=True;User ID=" + pUserName + ";Password=" + pPassword)

can any one please help me to fix the problem.

Thanks, Senthil.

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hey, if you're sure about the accuracy of user-server name and password your project may not has right to write the event log.. to fix that go to \HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Eventlog\Application\RestrictGuestAccess and change its value to (0) to reboot