The "Preparation too long" message will appear when your Nespresso Aguila machine fails to prepare a drink.

1. Open the lever and try to insert a new capsule. 
2. Make sure the main water supply is turned.
3. Start the drink preparation again.

If this does not resolve the problem, please contact us using the Live Chat in the bottom right or call our Nespresso team on 0808 100 5000.