HKEY_LOCAL_MACHINE\Software\SAP\SAPGUI Front\SAP Frontend Server\Security,
Add 2 registry entries at the end of the install.
DWORD key SecurityLevel with a value of 0 to deactivate
DWORD key DefaultAction with a value of 0 to allow
64bits OS
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\SAP\SAPGUI Front\SAP Frontend Server\Security