Hi Tommy :
Any other antivirus program should be COMPLETELY
removed ( uninstalled, etc ) before installing Avast & it
is fairly well known the Norton/Symantec is the most
difficult to completely remove. In addition to "uninstalling"
using "Add/Remove Programs" AND using Symantec's
"SymNRT" "tool", it would be wise to use your computer's
"Search" feature, selecting "All files and folders" and using
the search "term" "Symantec", then "Norton" and deleting
everything it finds. IF you are unable to delete every item
it finds, then download "Unlocker" from :
http://ccollomb.free.fr/unlocker & install it . Then run the
"Search" again, but this time click "Unlocker" instead of
"Delete" and hopefully no more Norton Antivirus on your
computer .
It would be helpful to us IF we knew the name(s) of you &
your Dad's Operating System(s) AND if the 2 computers
are "connected" as part of a "network" .
P.S. "The provider is waiting on the subsystem to start"
is on my "Outlook/Exchange" Provider/Shield.
However, I do not use either of these 2 .