Display Level 1 attachments

This policy setting controls whether Outlook blocks potentially dangerous attachments designated Level 1. Outlook uses two levels of security to restrict users' access to files attached to e-mail messages or other items. Files with specific extensions can be categorized as Level 1 (users cannot view the file) or Level 2 (users can open the file after saving it to disk). Users can freely open files of types that are not categorized as Level 1 or Level 2. If you enable this policy setting, Outlook users can gain access to Level 1 file type attachments by first saving the attachments to disk and then opening them, as with Level 2 attachments. If you disable this policy setting, Level 1 attachments do not display under any circumstances. If you do not configure this policy setting, Outlook completely blocks access to Level 1 files, and requires users to save Level 2 files to disk before opening them.

This policy has no additional user input fields.

• User
  Add file extensions to block as Level 1

  Windows7
• User
  Add file extensions to block as Level 2

  Windows7
• User
  Allow users to demote attachments to Level 2

  Windows7
• User
  Display OLE package objects

  Windows7
• User
  Do not prompt about Level 1 attachments when closing an item

  Windows7
• User
  Do not prompt about Level 1 attachments when sending an item

  Windows7
• User
  Remove file extensions blocked as Level 1

  Windows7
• User
  Remove file extensions blocked as Level 2

  Windows7