FIX: The Proxy Server Isn’t Responding -

Ypur computer appears to be configured correctly, but the device or resource (web proxy) is not responding PAC file not working | Firefox Support Forum | Mozilla Support Solved this problem by setting network.dns.disableIPv6 to true. I don't consider this as a good solution, because pure IPv6 sites can't be accessed. My ISP provides both IPv4 and IPv6. DNS server is not obtained automatically Solved - Windows

How to Fix DNS Server Not Responding in Windows - XtremeRain

Apr 23, 2019 your computer appears to be correctly configured but the

Resource (web proxy) is online but isn't responding to

Mar 16, 2020