Download | Winbox 3.18 ((install))
: Starting from v3.14, Winbox uses AES128-CBC-SHA encryption and ECSRP for secure authentication. Download Options
To see if you are accidentally using the unsafe 3.18 version: Winbox 3.18 Download
https://download.mikrotik.com/routeros/winbox/winbox64-3.18.exe : Starting from v3