Solution
XNET Session Interface:BaudRate has been replaced from NI-XNET version 16.0 by new
XNET Session Interface:BaudRate64 property.
NI-XNET Help documents defines the first one as a
former 32-bit property without direct naming it. It is not possible to directly find former 32-bit property in the XNET Session drop-down list but you can just copy-paste it from provided with NI-XNET driver examples. Instead of performing this operation, we recommend implementing to your VI newer 64-bit
Interface:BaudRate64 property. For the default baud rate values that are acceptable by your CAN hardware, you can still apply values used with the 32-bit property. For custom transmission rates new property requires at the input unsigned quad (64-bit integer) value and it has different frame formatting.