Inside the Ubuntu terminal:
sudo apt update
sudo apt install ettercap-graphical -y
This installs the fully functional 64-bit Linux version of Ettercap (both text and GTK GUI). download ettercap for windows 10 64 bit
| Issue | Solution |
| :--- | :--- |
| “No interface found” | You did not run as Administrator, or Npcap is not installed in WinPcap-compatible mode. Reinstall Npcap. |
| Crash on startup | Your Windows 10 build is too new for the 64-bit binary. Try the Cygwin compilation method. |
| “ettercap: command not found” | You did not add Ettercap to your PATH. Reinstall or manually add C:\Program Files\Ettercap to system environment variables. |
| Antivirus deleted ettercap.exe | Windows Defender identifies it as “HackTool:Win64/Ettercap”. Restore the file and add an exclusion folder for C:\Program Files\Ettercap. |
| GUI is glitchy or tiny | This is a known GTK+ scaling issue on high-DPI Windows 10 screens. Go to ettercap.exe Properties > Compatibility > Change high DPI settings > Override high DPI scaling (Application). | Inside the Ubuntu terminal: sudo apt update sudo
Microsoft’s Windows Subsystem for Linux (WSL) lets you run a genuine Linux kernel inside Windows, including native Ettercap with full 64-bit support. This installs the fully functional 64-bit Linux version
Open Microsoft Store, search for "Ubuntu" (20.04 or 22.04 LTS), and install. Launch Ubuntu from Start Menu, create a username/password.