Windows10 explorer.exe hangs at startup

Windows10 explorer.exe hangs at startup when Start Menu 10 is active.
I did a lot of restarts enabling the startup programs one by one
and there is a problem with Start menu 10 : explorer.exe hangs then closes.
I have to click a few times with my mouse to restart explorer and continue the startup sequence.
Event ID 1002 : explorer.exe stopped interacting with Windows and was closed