addFileAttachmentAsync Appends Invalid Authorization Header
问题 I work on an application that as part of one of its features attaches files to outgoing emails with Office.context.mailbox.item.addFileAttachmentAsync . In the most recent update Outlook for Windows Version 1811 (Build 11029.20079 Click-to-Run) the files are failing to attach to the mailbox item with a "Download Error" displayed in the UI. To inspect this further I user Fiddler and discovered that this method has started appending the following header Authorization: Bearer . Since no header