The security protocol used to connect to Xero is no longer supported
Overview
ODBClink uses components within Windows to negotiate a security protocol with Xero.
From 1/07/2018, Xero now requires TLS 1.2 as security protocol.
Unfortunately, this protocol is not inbuilt by default in all versions of windows.
See Updating windows to use the TLS 1.1 or TLS 1.2 security protocol for more information.