One of our community members advised us that Microsoft Defender is flagging our setup application as containing a trojan.
For the moment, we have removed this installation option and submitted the file to Microsoft for analysis as we believe the file is fine and that this is a 'false positive' in the latest MS Defender definitions.

This is supported by scans on such sites as Virustotal and Jotti, which you can use yourself if you have any concerns. We'll return that installation method as an option once Microsoft sorts things out for us.