On November 19th, Microsoft will begin a staged rollout of personal account (via MSA) support in the Teams Desktop apps for Windows and Mac OS, extending the support that already exists in Teams Mobile applications. Microsoft will roll out in phases, taking customer feedback into account, and will pause rollouts over the U.S. holidays.
New users will be able to sign in with a personal account after installing the Teams app. Existing users with a work or school account, will see an option to add one personal account via their profile menu. Work and personal experiences will run in separate windows to visually differentiate them.