You must have valid licenses installed before you can begin using CC-SG 5.0 and later. Until the licenses are installed, your CC-SG only allows access to limited functions. See Licensing - Limited Operation Before License Install.
If you're a new customer to CC-SG with a physical appliance, see Licensing - New Customers - Physical Appliance.
If you're a new customer to CC-SG with a virtual appliance, see Licensing - Virtual Appliance with License Server.
If you're an existing customer who is upgrading to CC-SG 5.0 and later, see Licensing - Existing Customers.