The laptop is the one that works. It is a Toshiba Tecra A50-C purchased in 2016.
The desktop is the one that does not work. It was built for me, sometime around/prior to 2016. It has a 64-bit operating system, x64-based processor. These are the specs as noted above: PC desktop running Windows 10 Pro and Photoshop CC 20.0.6 20190724.r.80. It is over 2 years old, and has 16GB of RAM. Its hard drive had 106GB free out of 476GB, which I cleaned up to 189GB free of 476GB. I have updated Photoshop, Bridge, and Camera Raw on this machine.