I have users in my Customer Contacts that I want to create a secure site for. I DO NOT want them to become a part of my organization, and DO NOT EVER want them to be prompted to create a Microsoft account. This is a shameful business decision so that you can sell more X boxes. You have forgotten your core competency to serve the business user.
You have only two choices, share your secure site with a Hotmail account, or share it with yourcompany.com and give them a brand new email address. There is no way around it that I can find and I am in shock and Microsoft should be ashamed. Please help if you know a way. Thank you.