connStr = "Provider=Microsoft.Jet.OLEDB.4.0; " + "Data Source=" + "\"" + path + "\"" + ";" + "Jet OLEDB: System Database=" + "\"" + path2 + "\"" + ";" + "User Id = user1; " + "Password = pass1";
path and path2 surly are correct. "path" is the path to the database and "path2" is the path to the work group information file. The whole connection string seems to be correct, as well.
Cannot start your application. The workgroup information file is missing or opened exclusively by another user.