I have a Dell xps8930 . Dell is trying to update the system bios. It fails to update

Dell has an update my systems bios. It will not upload. Is there something in norton 360 preventing this?

I do not think so since the BIOS is flashed before Norton is loaded.

You need to be very careful about flashing a new BIOS as any problem could cause you to lose computer access. I just flashed the BIOS on an HP laptop that went smoothly and Norton 360 is on that machine.