Problem with Norton Live Update...?

I cannot complete my Norton LiveUupdate. The relevant part of the error message is below:

The following updates have been found:

%26gt; Symantec Security Software Update, 554.8 KB

%26gt; Norton Internet Security security updates, 7769.5 KB

Total Download 8324.3 KB

The following updates have been aborted:

%26gt; Norton AntiVirus Virus Definitions has 1 aborted update(s).

Reason:

LU1875: This update failed during its preprocessing welcome text phase

Installing Norton Internet Security security updates (1 of 1), errors ocurred during update.

Installation failed, error summary...

LU1821: This update failed because it tried to overwrite a file that was in use. Close all of your Symantec applications and run LiveUpdate again.

LiveUpdate session is complete.

*******

When I deactivate my Norton, reboot, and run this over again IT STILL gives me this message? what's the deal?

Problem with Norton Live Update...?avast

Go to Symantec's support site, they will tell you what the message means and how to fix it.