I always disable resident protection when I install a new antivirus.
But sometimes this is not enough.
I think that many people use two antivirus on their PC and I am interested to know if there are any problems.
dobbin
Had the same problem with Norton that I removed.
Remove Norton is one of the most difficult things in earth...
Oooohhh, noooooo.... Norton again!!! Get away from it!!! Do not install more than one antivirus program (resident). Norton is the monster of the monsters... Never gets out of the registry... unless a lot of work can be done... But be happy, I´m here because I get rid from Norton, after Vlk and Kubecj precious help, lot of lost hours... But I´m here, I´m avast! To get rid from Norton is one of the most difficult things in the earth!
The main reason installation fails or systems freeze when using new AV programs is the inablility of the old ones to uninstall properly. I have had to dig up removal tools for Norton before anything would operate properly. This is not an avast issue, Kaspersky, McAfee and even Grisoft (e-mail plugin) have their own unique uninstall issues as well.
I post the 'saga'
here.
Take a deep breath