See this help article for details:
http://helpx.adobe.com/x-productkb/policy-pricing/activation-deactivat ion-products.html
- You need to be on-line to deactivate software. Otherwise contact customer support.
- Open the product you wish to deactivate.
- Go to Help > Deactivate > Deactivate Permanently.
This deactivates the software and removes the licensing information from your computer.
Nancy O.