2003 Oddyssey Brake problem Need Help

My 2003 Oddyssey has all four brkes lokked up. Does anyone know what might cuase this. The dealer says master cylinder but the extended warranty company says not possible?

What do you mean they have all 4 locked up. Is the car stuck? can you drive it? Did it sit for a while?

Please be a little more descriptive.

I love extended warrenty companies. is they say its not posible then why don't they tell the dealer what to replace!