Solved
STM32CubeProgrammer V2.17 does not work.
I updated the STM32CubeProgrammer from version V2.10 to version 2.17, but it doesn't work on my computer (Windows 7 ). I installed new version on Java, reinstalled program, it didn't help.
Windows 7 isn't supported.
STM32CubeProgrammer ships with its own Java, so you shouldn't need to do anything there.
Could be antivirus software interfering, but it could also just be fundamentally incompatible with Win7.
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