Sigh. Really, we thought we had the official official hashtag, but it was only mostly official. Our updated hashtag is #MSDyn365FO. (It now has MS in the front 😊)
We know that our product name is long, and has changed. We’ve worked with our branding, marketing, and legal folks to come up with a way to make all of our content easier to find. It’s #MSDyn365FO.
We’ve already updated all of our content on docs.microsoft.com with the new hashtag, and hope that you follow suit with your blogs, Tweets, and other conversations.