Hi @Ggast​ ,​After some try-and-error, it work for me.Because some jre files is not extracted from installer.Try to extract "SetupSTM32CubeMX-6.3.0-Win.exe" manually(ex. WinRAR).You will get "jre" folder, "Readme.html" and "SetupSTM32CubeMX-6.3.0.exe...

Hi @Khouloud ZEMMELI​ ,I have same problem.Error message is from install process 4, and in uninstall.The folder is existed, just jvm.cfg is missing.How to fix it?Thanks.