Show content in Reading Pane (Exchange Virtual Vault setting)
Controls whether the content of an item that is selected in Virtual Vault is shown in the Outlook Reading Pane.
If the item itself is a document, it is not displayed in the Reading Pane. A message in the Reading Pane advises the user to open the item to read the item's contents.
Never show content. The Reading Pane always shows only the selected item's header. A banner provides a link to open the original item.
When in Vault Cache (default). The Reading Pane shows the selected item's header. If the item is in Vault Cache, it also shows the content. If the content is not shown, a banner provides a link to open the original item. When the Vault Cache content strategy is Store only items that user opens, the effect of this value is that the Reading Pane only shows the content of previously opened items.
Always show content. The Reading Pane always shows the header and content of the item that is selected in Virtual Vault.
Show content in Reading Pane can only have the value Always show content if the following conditions apply:
You have upgraded from an earlier release.
In the earlier release, Show content in Reading Pane had the value Always show content.
Always show content is not available in the Modify Setting dialog. So if Always show content is the current value and you change it, you cannot go back to it.