I find there is no more launch STM32CubeMX option in the RTE configuration wizard when selected STM32H745 device. But it sill exist for STM32H743. So, what's the reason?
under Project -> Options For Target -> Device tab, what is the exact STM32H745 device you are using? Is it STM32H745IIKx:CM4?
What version of the keil tools are you using? Which STM32H7 version are you using?
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