GitHub Release: nmap/npcap v1.90 (21.10.2026)

Installer and debug symbols available from https://npcap.com/#download

• Fix an incompatibility between NPFInstall.exe and the older drivers installed
  
  on Windows 7, 8, and 8.1. Those drivers still use the INSECURE_NPCAP
  
  ComponentID and will not install with the nmap_npcap ID. A symptom is the
  
  installation failing with error 0x800f0203.

Npcap SDK 1.17

• Upgraded libpcap to 1.10.7