Whenever you install an application on Windows, typically through MSI, there is a registry key created, with plenty of information for uninstallation, like the uninstaller location, install date, publisher, etc… you can find all of the options here: Add uninstall information to Add/Remove Programs - NSIS In case an application is installed for the current user and not for all user, the Installation/Uninstallation details will go to the Computer\HKEY_CURRENT_USER\Software\Microsoft\Windows\C...