Why will hand brake on laguna not come on. was working then car was parked for 2 months. now it not working?

The hand brake on your Laguna may not be engaging due to rust or corrosion that has developed on the brake components while the car was parked for two months. Additionally, the brake cables might have become stuck or stretched, preventing proper function. It's also possible that the brake pads have seized against the discs. Inspecting and possibly lubricating or replacing the affected components should help resolve the issue.