Additional Way to Disable IPv6 over all interfaces and prefer IPv4 to IPv6

Execute the following command through command line or script:

%windir%\system32\REG.EXE ADD HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters /v DisabledComponents /t REG_DWORD /d 0xff /f

Thanks to Greg Stigers for this tip.