Resolved! No ST-Link detected (STM32CubeProgrammer)
I used the STM32CubeIDE for 3 years on a Windows10 PC. After installing the 8-bit ST_Tools (STM8CubeIDE,...) on the same PC the connection to a NUCLEO-64 (STM32-G431RB) does no longer work. Now STM32CubeProgrammer reports "No ST-Link detected". Howev...