DavidR
18
Sorry but deactivation won’t be enough as there will still be low level drivers enabled and it is these that will/can come into conflict.
Norton is notorious for not playing nice with other security applications as it gets its hooks (low level drivers) into everything and this is I feel what you are seeing. There are many such posts in the forums of issues after having had Norton installed.
Now I don’t know if you could uninstall it, but it can be a bit of a pig to remove everything (so I would still recommend the use of the tool) and reboot. Then you may be able to do a custom install and don’t install the AV element; I don’t know if this is even possible or how successful this might be.