Advchk.exe
(Symantec)
Advanced Tools Check. Background task which is part of Norton System Works and Norton Utilities. Although we are not 100% sure about it, we believe it to be a background task which periodically checks back with the Symantec site for the latest updates to the utilities (the Advanced Tools) which are part of Norton System Works and Norton Utilities.
Recommendation :
In our experience disabling it does not seem to have any adverse effect whatsoever on the proper functioning of either of these two products. We recommend therefore that you disable it with Startup Manager.