Windows Update Error 0x80244018

What is WU-0x80244018?

Connection to the Microsoft update servers is blocked, usually caused by custom proxy servers, custom firewall rules, or stale DNS resolver cache settings.

Common Causes

• Incorrect proxy configurations blocking the Windows Update client from accessing external hosts.
• Third-party firewall settings blocking outgoing connections on HTTP port 80 and HTTPS port 443.
• Stale DNS cache directing the update client to outdated Microsoft Update server IP addresses.

Step-by-Step Fix Guide

• 1
  Disable proxy server options under Windows Internet Settings and use direct connections.
• 2
  Reset the TCP/IP stack and flush the local DNS resolver cache to clear route blocks.
• 3
  Temporarily disable custom third-party firewalls and use the default Windows Defender Firewall.

Commands & Diagnostics