Norton Insight Untrusted Files

I Have various ni.dll files (ceewrtier.ni.dll, backweb.ni.dl, content.ni.dll) that when clicked on in insight disappear from the screen and do not locate in explorer search.  Does anyone have feedback on this type of file activity and why does insight list a screen for the file but cannot locate it?  The insight screen alarmingly always says unknown developer, no last used information but many users.  I have researched .dll files but what are .ni.dll files? 

 

Thanks    

You may also have to configure WIndows to show hidden files and system files in order to find them.

I Have various ni.dll files (ceewrtier.ni.dll, backweb.ni.dl, content.ni.dll) that when clicked on in insight disappear from the screen and do not locate in explorer search.  Does anyone have feedback on this type of file activity and why does insight list a screen for the file but cannot locate it?  The insight screen alarmingly always says unknown developer, no last used information but many users.  I have researched .dll files but what are .ni.dll files? 

 

Thanks