Full System Scan Keeps Scanning All Files Instead of Only Changed and New Files

Norton Security | Norton Internet Security
1

Frustratingly, NIS 2010 insists on scanning all files  on my computer when it runs a Full System Scan instead of scanning only new and changed files. As I understand it, NIS should not rescan files that are unchanged since the last Full System Scan.

 

I can only imagine there must be some setting that I inadvertently changed (because I am sure that NIS would never misbehave on its own, would it?):smileywink:

 

Does anybody here know which setting might be out of wack and exactly where I would find it to reset it properly?

 

Thanks very much.

2
dlauber wrote:

Frustratingly, NIS 2010 insists on scanning all files  on my computer when it runs a Full System Scan instead of scanning only new and changed files. As I understand it, NIS should not rescan files that are unchanged since the last Full System Scan.

 

I can only imagine there must be some setting that I inadvertently changed (because I am sure that NIS would never misbehave on its own, would it?):smileywink:

 

Does anybody here know which setting might be out of wack and exactly where I would find it to reset it properly?

 

Thanks very much.

HI dlauber

 

Check the "Scan Performance Profiles" in "Settings". If it is set to Full Scan it will scan all files each time you run. If you select one of the other "Trust" settings then the scan will shorten depending on what files are trusted.

3

Hi dlauber,

 

NIS 2010 will rescan files that are unchanged since the last Full System Scan whenever a new virus definitions set has been installed since the last Full Scan (and, as you probably know, this occurs often).  The reason for this is that there is always a possibility that a threat of recent vintage in one of your files may have been missed due to the lack of a signature in the previous definitions set.  The new definitions may catch threats that were unknown at the time of the previous scan.