REGEDIT4

[HKEY_LOCAL_MACHINE\Software\Microsoft\Office\9.0\Excel\Security]
"XLM"=dword:00000001
[HKEY_LOCAL_MACHINE\Software\Microsoft\Office\10.0\Excel\Security]
"XLM"=dword:00000001
[HKEY_LOCAL_MACHINE\Software\Microsoft\Office\11.0\Excel\Security]
"XLM"=dword:00000001