What is the reason for the exclamation point in win10 network?

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Recently, there is an exclamation point in the network icon in the lower right corner of win10, but it can surf the Internet. Originally, I didn't want to pay attention to it, but when I opened OneDrive today, I was prompted that there was no network connection, which is probably affected by this, so record the solution.

Open the Nic properties window, select the network client, and click configure

Select Advanced and set the mass transfer offload v2 (IPv4) value to off.

3. The network card is automatically re-enabled and the problem is resolved.

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