The trial version of the Sage 50 is available for 30 days, from the day of installation on the system. Incase you have not actually installed or activated the program, then the Sage 50 will start the trial mode until you have activated the program. In case you have not input the serial number before the expiration of the trial version, then all the access will be lost to all the data and the features along with the disabling of the Sage 50.