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While Windows raw sockets can send and receive ICMP packets, Nmap relies on libpcap packet capture to spot responses, so if pcap isn't available (--unprivileged or Npcap not installed), we need to fall back to TCP connect for host discovery, just like we do for unprivileged users on other operating systems. Previous behavior was a fatal error suggesting unhelpfully to use --unprivileged.
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110 KiB