Activity and Scans Scan cancelled

7107i3800EF7146A7E3B2When my computer is idle, Norton Activity and Scans starts and then cancelles it self. When I open the computer in the morning, I am greeted with the following messages;

 

 

 

 

 

 

 

 

 

About every week I get a repeat of this, I have screen shots of most of them.

 

What do I need to do to fix this? Or, what do I need to do to stop this from happening?