The Statistica license file STAT.lic for the single-user version is located in the Statistica installation directory, usually at:
C:Program Files/TIBCO/Statistica
C:Program Files/Statistica
C:Program Files/Dell/Statistica
C:Program Files/StatSoft/Statistica
C:Program Files (x86)/TIBCO/Statistica
C:Program Files (x86)/Statistica
C:Program Files (x86)/Dell/Statistica
C:Program Files (x86)/StatSoft/Statistica
C:Program Files/TIBCO/Statistica
C:Program Files/Statistica
C:Program Files/Dell/Statistica
C:Program Files/StatSoft/Statistica
C:Program Files (x86)/TIBCO/Statistica
C:Program Files (x86)/Statistica
C:Program Files (x86)/Dell/Statistica
C:Program Files (x86)/StatSoft/Statistica
If we want to replace the file, we close all instances of Statistica, delete the original/current STAT.lic (or move it to another location, for example for backup purposes), and copy the new license file STAT.lic into the same location.