While F-Secure's official policy states that a trial can only be used once per device, some users employ unofficial methods to bypass these restrictions. How the F-Secure Freedome VPN Trial Reset Works
A common unofficial method for Windows users involves modifying the MachineGuid in the registry to make the computer appear as a new device to the F-Secure servers.
Most trial reset methods involve removing the identifiers that the software uses to track your device's trial status. Because F-Secure does not always require an account or credit card for its 5-day trial, it identifies "unique" users through registry keys or hardware IDs. 1. Windows Registry Modification