I am trying to check for .net Version with Wix 3.11 via Condition. This works fine until 4.5 like this:
That method (PropertyRef) is syntactical sugar. The NetFxExtension preprocessor injects the implementation at compile time. WiX is currently lagging behind. The implementation you are looking for would be something like:
<PropertyRef Id="NETFRAMEWORK45" />
<Condition Message="This application requires .NET Framework 4.7.1. Please install the .NET Framework then run this installer again."><![CDATA[Installed OR NETFRAMEWORK45>=#461308]]>
</Condition>
https://github.com/wixtoolset/issues/issues/5575
Update (hot33331): Added a # before the number 461308. Without that it did not work for me.