Electronic – Altium not showing PCB’s body in 3D view

Try this:

Go to the PCB.
Click Project --> Component Links.
Make sure all the parts are linked.
Click OK.

Go to the SCH.
Design --> Update PCB.
There should be nothing to update.

I really don't appreciate several moderators flagging my post as a duplicate even after I explained explicitly and exactly why it is not. This is not a very helpful way to run a forum.

Tom has been the only one trying to help, and I'm grateful.

I was able to get a response from Altium that when running a Virtual Machine there can be compatibility problems with DirectX, which the Show Pad Nets, Show Via Nets, and Show Pad Numbers features all rely on.

The response I received is as follows and I believe answers the question I raised: "Net Names on tracks and Pads are dependent on Direct X. Some Virtual machines have problems allowing Altium the usage of Direct X. You may need to install the windows video card driver for the particular video card you are using inside of the virtual machine with in the windows environment.

If you are not using a Virtual Machine and if your Video Card supports Direct X then possibly re-installing the latest version of the video card driver may resolve the issue"

I hope this helps someone else out in the future.