01 Volvo v70xc awd won't start

First check to see if you have spark going to the spark plugs.

They are good, It was running perfectly then it just shut itself off. It turns over but won't start now. I'm very confused.

Really not all that familiar with this vehicle but if you have a owners or repair manual it would tell you what the immobilized message means and also what needs to be done to fix it.