The problem with both the Anytone AT-779UV and the Radioddity DB20-G in Windows 10 is that over the production run of the DB20-G/AT-779UV there have been at least two different programming cables manufactured for these radios; even though they look the same to the naked eye.
Some people believe the difference is the manufacture: Anytone vs. Radioddity; but my instincts tell me that there were two different cables used by both manufacturers throughout the production run.
One cable, when used in Windows 10, will automatically install the Prolific driver when inserted and the CPS software will offer you the proper COM setting in the SET menu. Then you can use the PROGRAM menu to Read From and Write To Radio.
The other cable will not automatically install any driver when used with Windows 10. And even if you have previously installed the Prolific driver in Windows 10, this cable will not recognize this driver and still fail to work. In this case neither the SET or PROGRAM menus will work correctly.
However, there is a driver package that can be manually installed into Windows 10 that will provide this functionality for this cable.
Use the Startup.exe in the WIN 10 11 folder in the attached compressed file below and your cable should work.
Report your results please.
AnyTone 2023 USB driver.zip