Block saving of Binary12 file types

This policy setting controls whether users can open Excel workbooks saved in the Binary 12 file format (which have the file extension *.xlsb).

If you enable this policy setting, Excel 2007 users will not be able to save files with the .xlsb extension.

If you disable or do not configure this policy setting, Excel users will be able to save files with the .xlsb extension.

Supported on: At least Windows Vista
Registry HiveHKEY_CURRENT_USER
Registry PathSoftware\Policies\Microsoft\Office\12.0\Excel\Security\FileSaveBlock
Value NameBinary12Files
Value TypeREG_DWORD
Enabled Value1
Disabled Value0

excel12.admx

Administrative Templates (Computers)

Administrative Templates (Users)