Hi, SeanMcKitrick!
Thanks for reaching out to Microsoft Community and posting your inquiry regarding your new Surface Headphones 2. We appreciate you taking the time to let us know about this and allowing us to help you out.
Kindly visit this page to be guided on how to Use Microsoft 365 with Surface Headphones.
Please ensure that the your Surface Book and Surface Headphones 2 have the most recent updates installed as well.
We hope this helps you out. Otherwise, don't hesitate to respond to this thread if there’s anything else that needs to be addressed.
Kind regards,
Janette_Z