Windows 7 system prompts that Windows cannot communicate with the device or resource (primary DNS server)

1. Open the Control Panel

2. Find the Network and Sharing Center and click to enter

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3. On the left side of the page, find Change Adapter Settings and click to enter

4. Then find the connected network, right-click, click Properties

5. Find Internet Protocol version 4 (TCP/IPv4), and then Click Properties

6, check Use the following DNS server address, and edit the DNS server

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