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As I understand it, it's not the main network that's causing the problem, otherwise there wouldn't be any internet at all... there are many possible solutions... from Hamachi to a second network card... Windows glitches are also possible... in the network environment properties, how many connections are there and what kind? And to which specific network does this icon refer? And if it is the main network after all, all questions should be directed to the technical support of your internet provider. =)