Newer RouterOS v7 enforces stronger encryption. Winbox 3.7 cannot negotiate the handshake. Solution: Use RouterOS v6.48.x or older, or upgrade your Winbox.
Use Winbox 3.7 only for isolated lab environments or legacy hardware. For production networks, upgrade to at least Winbox 3.30 (stable) or the latest 3.41+. winbox 3.7
: By default, recent versions of RouterOS hide passwords in exports for security. In older versions like those used with Winbox 3.7, sensitive information might be included in plain text. Newer RouterOS v7 enforces stronger encryption