Last updated: September 2016
Your email attachments might get deleted after you send your email, and the filename appears to the recipients as ATT<XXXXXX>, where <XXXXXX> is an arbitrary number sequence. This happens if you have added a digital signature to your message, but turn it off when sending your email.
Our engineering team is working on a fix and will update this page when a fix or workaround becomes available.
Have a feature request?
We love reading your suggestions on new features and feedback about how you use our products! Share your thoughts on the Outlook UserVoice site. We’re listening.