Resolution of "Unable to resolve DNS address of server" appears in Win7 system

1. First, we press the Win7 computer keyboard on the Win+r shortcut to open the computer's running window, in the open running window, we enter CMD and click Enter, so that we can open the Win7 System Command Prompt window.

2. In the Open Command Prompt window, we enter the command code IPCONFIG/FLUSHDNS and click Return so that our Command prompt window automatically executes the command, and we just wait for the command to complete.

3. After waiting for the command to complete, we re-enter the netsh winsock reset in the Command Prompt window and click Enter, waiting for the Win7 computer to finish the command, we restart the computer.