How can i update my antivirus software without buying?

i have a trail version of mcafee, norton antivirus, they r not working thamn specified time, how can i update them

How can i update my antivirus software without buying?windows

I would get AVG its free and free to update:

http://www.download.com/AVG-Anti-Virus-F...

How can i update my antivirus software without buying?antivirus download

you can鈥檛 , pay the fee and update it.
You should never use 2 anti-virus at the same time. They will fight each other,cause conflicts and leave you with less protection then either one alone would give you.
delete them, go to the website listed below.

it's free.
get cracks or patches or keygens for registerin and then update..but this is illegal and i m not responsible if u r caught doing this illegal stuff.