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  • It’s an old vulnerability but still exists.

    Due to security vulnerabilities with NetBIOS over TCP/IP, you may wish to disable it by following instructions.

    There are two ways to disable NetBIOS and this works on the majority of Windows OS including Windows 8/10 desktop and Windows 2012/2016/2019 servers.

    Disable NetBIOS using GUI

    • Right-click on the Network icon on the start bar at the right-hand side and click on open network and sharing center
    • Click on Change adapter settings
    • Right-click on your network interface and click on Properties

    • Select Internet Protocol Version 4(TCP/IPv4) and click on Properties
    • Click on Advanced on the properties window
    • Click on the WINS tab and select Disable NetBIOS over TCP/IP

    • Click OK

    Done, NetBIOS over TCP/IP is disabled now.

    Disable NetBIOS through Registry

    If you are using Windows Server core edition or prefer using registry then the following will help.

    • Launch Registry Editor
    • Navigate to the following
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\NetBT\Parameters\Interfaces
    • You may have multiple interfaces. Go to the respective interface where you want to disable
    • Double click on NetbiosOptions and change the value to 2 and Ok

    That’s all!

    Conclusion

    Disabling NetBIOS on Windows is easy as you could see above.

    Next, explore multiple ways to Boot Windows in safe mode.