Allow users with earlier versions of Office to read with browsers...

This policy setting controls whether Office applications save Information Rights Management (IRM)--enabled files in a format that allows them to be viewed in Microsoft Internet Explorer with the Windows® Rights Management Add-on. The Windows Rights Management Add-on for Internet Explorer provides a way for users who do not use the 2007 Office release to view, but not alter, files with restricted permissions.

If you enable this policy setting, an embedded rights-managed HTML version of the content is saved with each IRM-enabled file, which can be viewed in Internet Explorer using the add-on. This configuration increases the size of rights-managed files, in some cases significantly.

If you disable or do not configure this policy setting, Office applications do not save IRM--enabled files in a format that supports the Windows Rights Management Add-on.

Important - Recent testing of this policy setting determined that it did not function as expected.

Supported on: At least Windows Vista
Registry HiveHKEY_CURRENT_USER
Registry PathSoftware\Policies\Microsoft\Office\12.0\Common\DRM
Value NameIncludeHTML
Value TypeREG_DWORD
Enabled Value1
Disabled Value0

office12.admx

Administrative Templates (Computers)

Administrative Templates (Users)