internet security 30 day trial already expired on installation

I installed the free internet security 30 day trial today
no previous installation apart form norton
windows 8.1

subscription expired appears immediately on installation

phone support recommended i buy now (really?)

what to do?

PS cant believe i was asked for my full name on phoning support, this is unusual and unneeded imo

now its uninstalled itself.

cheers avast

did you uninstall Norton before installing avast?
did you run Norton removal tool?

norton is uninstalled cleanly.

not sure how this would affect the subscription status of a completely different program?

it should not …may be a bug, try again

General: Uninstalling a third-party antivirus software http://www.avast.com/en-eu/faq.php?article=AVKB11
avast FAQ http://www.avast.com/en-eu/faq.php
FAQ video http://www.avast.com/en-eu/faq.php?q=video

OK, found a solution so posting it for everyone else

install avast internet security 30 day trial version
reboot
allow avast internet security 30 day trial version to uninstall its firewall (will do this with no user input)
reboot
it now has downgraded to avast free antivirus
register
now add firewall trial
let it install
reboot
this gives you TWENTY days trial of the firewall (well thanks)


cant say this whole thing gives me any confidence to buy, what with the lousy customer service and automatic uninstallations…nonetheless i know the antivirus is good from past experience so maybe i will get over this annoyance

thanks for the help