The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine

Question

I am getting the following error: The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine. while I am trying to read an excel file and than to populate it in GridView, within a VisualWebPart

I have found some solutions while googling my error, one of these was to install 2007 Office System Driver: Data Connectivity Components. I installed this but still not working also I installed this one: Microsoft Access Database Engine 2010 Redistributable but again it is not working.

I saw some posts on some forums that I have to change the application platform from x64 to x86 but I cannot do this because sharepoint runs only x64 apps.

I'm using 32bit Office Professional Plus installed on my E drive while system is in C drive because of space.

I have the following code:

protected void btnUpload_Click(object sender, EventArgs e)
    {
        string connectionString = "";
        if (FileUpload1.HasFile)
        {
            string fileName = Path.GetFileName(FileUpload1.PostedFile.FileName);
            string fileExtension = Path.GetExtension(FileUpload1.PostedFile.FileName);
            string fileLocation = System.Web.HttpContext.Current.Server.MapPath("~/App_GlobalResources/" + fileName);

            FileUpload1.SaveAs(fileLocation);

            //Check whether file extension is xls or xslx

            if (fileExtension == ".xls")
            {
                connectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + fileLocation + ";Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=2\"";
            }
            else if (fileExtension == ".xlsx")
            {
                connectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + fileLocation + ";Extended Properties=\"Excel 12.0;HDR=Yes;IMEX=2\"";
            }

            //Create OleDB Connection and OleDb Command

            OleDbConnection con = new OleDbConnection(connectionString);
            OleDbCommand cmd = new OleDbCommand();
            cmd.CommandType = System.Data.CommandType.Text;
            cmd.Connection = con;
            OleDbDataAdapter dAdapter = new OleDbDataAdapter(cmd);
            DataTable dtExcelRecords = new DataTable();
            con.Open();
            DataTable dtExcelSheetName = con.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
            string getExcelSheetName = dtExcelSheetName.Rows[0]["Table_Name"].ToString();
            cmd.CommandText = "SELECT * FROM [" + getExcelSheetName + "]";
            dAdapter.SelectCommand = cmd;
            dAdapter.Fill(dtExcelRecords);
            con.Close();
            GridView1.DataSource = dtExcelRecords;
            GridView1.DataBind();
        }
    }

Please someone help me.

Answer 1

The 'Microsoft.ACE.OLEDB.12.0' provider depends on the current office installation is it 32 bit or 64 bit.

In your case, you already installed 32bit Office Professional Plus so you should target the Solution Platform from "Any CPU" to "x86" based on office installation.

But Setting Platform target to "x86" will not be working with SharePoint, so try to uninstall 32bit Office Professional Plus then install Office 64 bitthat should solve your issue.

Check also other suggestions at 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine