Cancel a subscription

Help,

Can anyone tell me how to cancel a subscription that is going to be taken on the 17th. December 2014.

Thank you.

Send a ticket to Avast Support via here https://support.avast.com/

https://www.findmyorder.com/sstore?Action=DisplayHomePage&SiteID=findmyor&Locale=en_US
Disable the automatic renewal.