Outlook 2010: Some attachments are opened read-only
In Outlook 2010, some files / attachments (for example *.MSG) are opened read-only and therefore cannot be edited directly. The reason for this is the attachment preview feature, which opens the attachment in the background in order to display it directly in the Outlook message window if possible. The attachment preview opens these files in the background: If the attachment is now opened by double-clicking ... Read more