I use Outlook as my email service. When in Outlook, almost every time I send an email or delete an email I get a popup box Titled "File Download". It says "DO you want to open or save this file?" "NAME Is a long string of alpha-numeric characters such as "{53BDCB52-F771-4692-B039-55C62COD6390}.html". Then "Type: Firefox Document, 6.66kB", Then "From: C:\Users\Neil\AppData\Local\Microsoft\Windows.....", Then "Open" "Save" "Cancel". There is a box with a check mark "Always ask before opening this type of file". Question---How do I stop this box from appearing?