"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & Server.MapPath("webbang.mdb") i try but error But this is working on locale(my pc) <add key="Connection1String" value="Provider=Microsoft.Jet.OLEDB.4.0;Data Source="/> <add key="Connection2String" value="D:\Projects\school\result.mdb"/> <add key="Connection3String" value=";Persist Security Info=False;User ID=Admin;Password="/> <add key="Connection1Type" value="OleDb"/> <add key="Connection1Server" value="MSAccess"/>thanks