ometimes, the “Minecraft can t resolve hostname” error can occur when your Windows Firewall or antivirus software blocks the connection between your game and the server. To fix the error, you can allow the game through your firewall or antivirusSome people recommend changing the DNS server address for your network to fix the 'Can't resolve hostname' error. The DNS server is set by default to pick an address automatically, so you have to change that from the Settings.This error indicates that your hostname failed to translate into an IP address. Usually, this error occurs when you change the hostname of your system. Please check the details in the Address field as entered by you. Also, check if the hostname of your FTP server and IP address is correct.
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