Hello @JayarajAnbalagan ,
a similar issue had been encountered with Cubemx version not displayed (ST Motor Control Workbench Not Detecting STM32Cube... - STMicroelectronics Community).
Can you please check the following list to provide us more information to identify better the problem:
1) operating system version
2) operating system language
3) MCSDK installation admin or user only
4) CubeMX installation admin or user only
5) Have you other CubeMX installed?
6) have you moved manually the CubeMx Installation folder?
7) CubeMx open regularly in standalone mode?
8) Check with registry editor if exist keys (one of the above at least)
-Computer\HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\STM32CubeMX*
-Computer\HKEY_LOCAL_MACHINE\SOFTWARE\\Microsoft\Windows\CurrentVersion\Uninstall\STM32CubeMX*
for 64 and 32 branch.
Kind regards
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