When attaching a document to (any) record in D365 F&SC that had a sensitivity label applied using Azure Information Protection, users are unable to see a preview of the attachment in the Preview fast tab. On an excel file, for example, an error pops up stating:

"Couldn't Load This Workbook. We're sorry. We can't open the workbook in the browser because it uses these unsupported features: Workbook protection"

To view these files, users have to download the file and open it locally. These files are encrypted with Microsoft Azure Information Protection sensitivity labels inside of Microsoft Office and attempting to be viewed inside Microsoft Dynamics 365 for Finance & Supply Chain from Microsoft Edge browser - all while logged in with the same Microsoft Azure AD account which has security access to view the file. The online version of Excel can open and view the file (from a SharePoint library, for example). It would be great if the Previewer supported viewing these files as well.