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I'm lost about how to use the Trial expiration. Please explain to me what stops someone from simply downloading a trial version, using it until it expires and then downloading another one? He can use it in trial mode forever?
Suppose that you protect your application with 30 days trial (you set 30 days in the "Trial Settings" panel in WinLicense).
1) A person called "Bob" downloads and installs your application, so WinLicense stores in his system the current Trial status (30 days left).
2) After 30 days, Bob launches your application, so WinLicense detects that it's expired. When it's expired, WinLicense stores a special mark in the system which indicates that your application is expired.
3) Bob uninstalls, downloads and installs again your application.
4) WinLicense detects that the trial version is already expired, so, it won't allow more executions of Bob's PC.
If you want that a new version of your application clears the trial in Bob's PC (or any other PC) that already used a previous trial version, you have to select a new "Trial Unique Key" (in Software panel) for your application.This will store the trial expiration settings in a different place in Bob's PC, starting a clean trial period for your new version.
If you release a new version of your application and you don't change the "Trial Unique Key" in your new protected application, the trial will keep running as it was in your previous installed version (so, if Bob's PC had the previous version with 4 days left, the new version will have 4 days left).