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Troubleshooting Section 7 of KitProg 3 User Guide has a solution;
"CMSIS-DAPv2 interface driver for DAPLink mode isn’t installed properly on Windows 10"
That describes which drivers to uninstall and re-load.
This appears to fix the driver issue - I no longer have the yellow caution triangle on the device name in Device Manager.
KitProg 3 User Guide @ https://www.cypress.com/file/452701/download