Block opening of Xll file type

This policy setting controls whether users can open XLL add-in files (*.xll) in Excel 2007.

If you enable this policy setting, users cannot open XLL files in Excel 2007.

If you disable or do not configure this policy setting, users can open XLL files in Excel 2007.

Supported on: At least Windows Vista

Registry Hive	HKEY_CURRENT_USER
Registry Path	Software\Policies\Microsoft\Office\12.0\Excel\Security\FileOpenBlock
Value Name	XllFiles
Value Type	REG_DWORD
Enabled Value	1
Disabled Value	0

excel12.admx

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