Applying Default values for HDX Adaptive Transport shows different value..

LTSR
Default Vaue is Off.
CR
Default value is Preferred

Upon checking in the VDA we are seeing the following value

HDXoverUDP   zero-length binary value.

If we manually apply OFF and Preferred we are seeing the following values

HDXoverUDP   0
HDXoverUDP   2


 

This feature is by Design

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Problem Cause

Once the check box of “Use the default value” is checked, we will have a policy setting added to our GPO, thus in the policy application stage, we will have to do some operation onto the registry, but in order to simplify the processing for each setting consumers(e.g. graphics component for this adaptive transport policy), we added a meaningless value to registry, thus each consumer can decide its own by-default value based on its own definition. We can for sure always have the GPO to put the right by-default value(e.g. Off or 0 in decimal (just an example), for above adaptive transport policy) to registry, but that’s just another implementation.