Weird problem - not sure how this happened.
Got an email yesterday that had a single attachment (a document). I saved the document, made modifications to it, and replied to the email attaching the modified document.
Today I was looking through my inbox, and the email that I received yesterday (with the original document on it - a single attachment), now has FIVE attachments. It has the original attachment, three of the same attachment that I replied to the email with, and a fifth attachment that's an icon from my desktop.
I am using Microsoft hosted exchange, so I logged into the web portal to check the email, and sure enough the email shows up there as well with 5 attachments (it's possible it happened in Outlook and then synchronized back to the web access).
The person that sent the email to me initially was my sister, and she logged into her email (live.com) and on her end it shows only a single attachment was sent to me.
It's got me very concerned - Not sure how this happened, but in Outlook there are definitely attachments on that email that it's impossible exist.
In fact, saving one of the three duplicate attachments on the email, the create date of the attachment is after the receipt of the email. (see screenshot)
I've run several types of malware scans, and can't detect anything on the computer.
It's really got me worried.
Open to any ideas. Not sure if this will help diagnose the problem, but I have several outlook profiles set up. This is the only thing I've noticed, so it could be happening elsewhere I just haven't noticed yet.