getAttachmentContentAsync(attachmentId, options, callback) - Email (.msg) Attachments in Outlook Appointment has missing extension name when accessing the appointment the second time

[margielovelet]

I am having issue with handling attachment for Outlook appointment. We have an add-in that saves appointment details to our web app.

The issue is happening on this scenario.

1. Create a new appointment with attachment of type email (.msg)
2. Calling "getAttachmentContentAsync(attachmentId, options, callback)" will return the complete attachment filename including extension name, say "aaa.msg"
3. Save the appointment
4. Edit the appointment
5. Calling "getAttachmentContentAsync(attachmentId, options, callback)" will return the only filename of the attachment excluding the extension name, so the result is just "aaa"

This is the snippet of my code

var attachment = attachments[currentItr];
var options = { asyncContext: { type: attachment.attachmentType, name: attachment.name, contentType: attachment.contentType, isInLine: attachment.isInline } };

        item.getAttachmentContentAsync(attachment.id, options, function (resultAtt) {
            if (resultAtt.status == Office.AsyncResultStatus.Succeeded) {
                var AttachmentContent = resultAtt.value; // Get the attachment content
           }
        }

The resultAtt.asyncContext.name is the one that is returning the filename without extension.

Thanks.

[mobisw-msft]

Hey @margielovelet ,

Can you tell us the platform (Outlook for Web, new Outlook for Windows, Outlook for Windows Classic or Outlook for Mac) you see this issue on?
Are you able to see the attachment extension correctly in getAttachmentsAsync? Using code similar to this:

Office.context.mailbox.item.getAttachmentsAsync
(
	function (asyncResult)
	{
		console.log(JSON.stringify(asyncResult));
	}
);