NIS 2012 stops working when I open Outlook

Hello,

 

Everytime I open my Outlook after 1 min the NIS 2012 stops working and when I try to open it gives me the error: 8504, 104 

I'm using Outlook 2007 SP3 - Office Enterprise and NIS 2012.

I've already try to uninstall the NIS but it still have the same error. 

And when I don't use Outlook, NIS works perfect.

Can anyone help me?

 

Thanks,

 

Joao