Block saving of Html and Xmlss file types

This policy controls whether Excel 2007 users can save Excel workbooks as HTML or XML Spreadsheet 2003 (XMLSS) files. HTML and XMLSS files usually have the following extensions: .mht, .mhtml, .htm, .html, .xml, .xmlss.

If you enable this policy setting, users will not be able to save files in the HTML or XMLSS formats in Excel 2007.

If you disable this policy setting, users will be able to save files in the HTML or XMLSS formats in Excel 2007.

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

excel12.admx

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Administrative Templates (Users)