The problem is that you cant have 2 antivirus sofware running at the same time. Also Norton 360 will ERASE Avira just so their own antivirus will properly work. If you want them to work together and not at the same time beacause it can make the pc lock up, you can install 360 first then (hopefully) your Avira installation will not erase 360 when you install it. If this does not work, then you have to choose which to go on. If you trust Avira, then use it
If you Trust Norton 360 then you cant install Avira
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The problem is that you cant have 2 antivirus sofware running at the same time. Also Norton 360 will ERASE Avira just so their own antivirus will properly work. If you want them to work together and not at the same time beacause it can make the pc lock up, you can install 360 first then (hopefully) your Avira installation will not erase 360 when you install it. If this does not work, then you have to choose which to go on. If you trust Avira, then use it
If you Trust Norton 360 then you cant install Avira
Hope this helps