The protection gets lost every few minutes.

This behaviour may occur on some installations involving SCIA Engineer 15.1.100 and after a particular Windows Update.
Affected are:  Tryout versions, Student versions and Floating licenses.
Not affected are:  Dongle licences.

To avoid this behaviour, we advise to download and install SCIA Engineer 15.1.106, or higher.

Download the latest version of SCIA Engineer.