Not sure how reliable it is, but I sometimes use the EICAR test virus. (False positive) Not sure what the rules are here on this forum or I would post the link. Google it.
You have to reboot as part of the program update/installation process, that is a requirement so that drivers and or files in use can be updated.
In the same way that the previous version was protecting you, by monitoring the various shields and ensure that they are at least scanning the various applications/file activity/traffic that they were previously. And as mentioned the eicar test site.
So first and foremost after the update you need to reboot, that pop-up should have been displayed.