: Sign in to Adobe Accounts with the email used for purchase. Navigate to Plans and Products > Products to view your registered software and its associated serial number.
: If you purchased a volume license, you can retrieve it by signing into the Adobe LWS and searching under Licenses > Retrieve Serial Numbers . Adobe Acrobat Xi Pro 11.0 20 Serial Number
If you have lost your serial number but previously registered the product, there are several ways to retrieve it: : Sign in to Adobe Accounts with the email used for purchase