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The Microsoft Access database engine cannot open or write to the file ''. It is already opened exclusively by another user, or you need permission to view and write its data.

lowpw asked:

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Hi, I have got the the following error when i'm trying to upload an excel file and store data into SQL SERVER.

The Microsoft Access database engine cannot open or write to the file ''. It is already opened exclusively by another user, or you need permission to view and write its data.

when i run on Visual Studio everything works without any errors. Once i deploy up to IIS 7 this error came out. But I can login using the userID and password stored in the database. What should I do to resolve this error? Thanks!
' Read the file and convert it to Byte Array 

        Dim filePath As String = FileUpload1.PostedFile.FileName

        Dim filename As String = Path.GetFileName(filePath)

        Dim ext As String = Path.GetExtension(filename)

        Dim contenttype As String = String.Empty

        'Set the contenttype based on File Extension

        Select Case ext

            Case ".xls"

                contenttype = "application/"

                Exit Select

            Case ".xlsx"

                contenttype = "application/"

                Exit Select

        End Select

        If contenttype <> String.Empty Then

            Dim fs As Stream = FileUpload1.PostedFile.InputStream

            Dim br As New BinaryReader(fs)

            Dim bytes As Byte() = br.ReadBytes(fs.Length)

            Dim ExcelConnection As New System.Data.OleDb.OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filePath + ";Extended Properties=""Excel 12.0 Xml;HDR=Yes""")
            Dim objCmdSelect As New OleDbCommand("Select AcadYr, Sem, Status, TUTGRP, ADM_NO, NAME, Assigned, Ward, Module1, Posting1, Start_Date1, End_Date1, Assigned2, Ward2, Module2, Posting2, Start_Date2, End_Date2, Assigned3, Ward3, Module3, Posting3, Start_Date3, End_Date3, Assigned4, Ward4, Module4, Posting4, Start_Date4, End_Date4, Assigned5, Ward5, Module5, Posting5, Start_Date5, End_Date5, Assigned6, Ward6, Module6, Posting6, Start_Date6, End_Date6, Assigned7, Ward7, Module7, Posting7, Start_Date7, End_Date7 FROM [Main$]", ExcelConnection)
            Dim objDR As OleDbDataReader
            Dim strConnString As String = System.Configuration.ConfigurationManager.ConnectionStrings("database").ConnectionString()
            Dim con As New SqlConnection(strConnString)
            Dim SQLconn As New SqlConnection(strConnString)

            Using bulkCopy As SqlBulkCopy = New SqlBulkCopy(SQLconn)
                bulkCopy.DestinationTableName = "studentdata"

                    objDR = objCmdSelect.ExecuteReader

                Catch ex As Exception
                End Try

                lblMessage.ForeColor = System.Drawing.Color.Green

                lblMessage.Text = "File Uploaded Successfully"
            End Using

            lblMessage.ForeColor = System.Drawing.Color.Red

            lblMessage.Text = "File format not recognised." & " Please Upload Excel formats"

        End If


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