The European Commission is going to launch an antitrust investigation against Microsoft related to its corporate messenger and video communication service Microsoft Teams. This was reported by Politico on Wednesday, January 25, citing unnamed sources.

According to them, the investigation is related to a complaint filed by another corporate messenger – Slack – back in 2020. Slack accused Microsoft of abusing its dominant market position and imposing its own Teams service on its business customers.

At issue was the fact that Microsoft tied it to the Office 365 suite and sold them as a single product. Now, according to Politico’s sources, the European Commission is going to speed up its examination of the issue and is already preparing to send Microsoft a notice of claim – which would mean the start of a formal investigation.

The European Commission noted that they are continuing to look into the complaint. Microsoft has not yet commented on the situation.