Can you use two antivirus together for better protection?

No! Use only one.

This is what a Microsoft MVP has to say about the subject. You may also want to consider reading her entire web-page on "How to prevent Malware". It is one of the best that I have seen.

http://users.telenet.be/bluepatchy/mieki...

"Never install more than one Antivirus and Firewall! Rather than giving you extra protection, it will decrease the reliability of it seriously! The reason for this is that if both products have their automatic (Real-Time) protection switched on, your system may lock up due to both software products attempting to access the same file at the same time. Also because more than one Antivirus and Firewall installed are not compatible with eachother, it can cause system performance problems and a serious system slowdown."

Good luck.

Can you use two antivirus together for better protection?triumph

no as they will more than likely counteract with each other they will not do the job properly

Can you use two antivirus together for better protection?worms

Norton Anti virus or Kaspersky won't permit 2 antivirus.
No, it's not recommend, there are often conflicts with each other, and in some cases 2 Antivirus programs can't be simultaneously installed.

This does not hold true for AntiSpyware programs however