How to disable MSI Windows Installer auto-repair ?

@gabri3l:

Thank you for all your work you invested in my problem. Finally the DISABLEADVTSHORTCUTS trick worked and solved my problem. Now I can open my start menu again without falling off my chair. :-)

@ee45678:

Thank you for the link, but I didn't find anything which would help me in my current situation there. But perhaps I will need it later again.