Your computer appears to be correctly configured, but the device or resource (DNS server) is not responding
Fix 1
Rt click on windows –> Control Panel –> Network & Internet –> Network & Sharing Center –> click connection
Internet –> Properties
Internet Protocol Version 4 (TCP/IPv4) –> Properties
– Choose Obtain an IP address automatically
– Choose Obtain DNS server address automatically
OK
Internet Protocol Version 6 (TCP/IPv6) –> Properties
– Choose Obtain an IP address automatically
– Choose Obtain DNS server address automatically
OK
Fix 2
Rt click on windows –> command –> Run as Administrator
Enter
ipconfig /flushdns
ipconfig /registerdns
netsh winsock reset
netsh int ip reset
ipconfig /renew
Restart your computer
OR
netsh int ip reset
ipconfig /flushdns
net stop dnscache
net start dnscache