Symantec Endpoint Protection requires a paid license after the trial period expires or when your current license expires. You can apply an existing license to a product upgrade. After you install Symantec Endpoint Protection Manager, you have 60 days to purchase enough license seats to cover all of your deployed clients.
To administer licenses, you must log on to Symantec Endpoint Protection Manager with a management server system administrator account, such as the default account admin. You use the License Activation Wizard to activate new or renewed licenses, or when you convert a trial license to a paid license. You license Symantec Endpoint Protection according to the number of clients that you need to protect the endpoints at your site.
Understand the importance of the license requirements for the computers that you want to protect. A license lets you install the Symantec Endpoint Protection client on a specified number of computers. A license lets you download virus and spyware definitions and other security content from LiveUpdate.
Purchase a license and save it to the management server
You need to purchase a license in the following situations:
You want to purchase Symantec Endpoint Protection.
Your trial license expired.
Your paid license expired.
Your license is over-deployed.
After you purchase your license, you receive an email with a Symantec license file (.slf) or a license serial number. You can use the serial number to activate the installation. You can also use the serial number to download a copy of the .slf file from MySymantec. You do not need to manually download a license file.