Microsoft last month offered concessions as it sought to avoid regulatory action, including extending a plan to unbundle Teams from other software such as Office, not just in Europe but across the world.

The probe is reportedly centered on concerns that Microsoft has stifled attempts to compete with Teams by making it run more efficiently when paired with its other in-house software. Additionally, a lack of data portability for Teams users has purportedly made it difficult for customers to switch to rival services.