EvaluationPerUser

Set this property to true to store evaluation information per user. The default value is true. If set to false, evaluation information is stored at the machine level. Note that you need to make sure the current user has the required privileges to store evaluation information at the machine level under HKEY_LOCAL_MACHINE\Software\Classes\CLSID<GUID>.

Evaluation information consists of the installation date of your software as well as the last time your software ran.