Salesforce and its messaging platform Slack have filed a lawsuit against Microsoft in London, accusing the company of anticompetitive practices related to its Teams collaboration app.
The lawsuit, filed in 2026, centers on allegations that Microsoft bundled Teams with other products in a way that limited customer choice. Slack argues this bundling gave Teams an unfair advantage in the market.
The legal action in the UK follows a similar complaint Slack made to the European Commission in 2020. Microsoft subsequently reached an agreement with the European Commission regarding its pricing practices, though the UK lawsuit represents a fresh legal front for the dispute.
The case involves three key players: Salesforce, the parent company of Slack; Slack itself; and Microsoft, whose Teams app has become a widely used workplace communication tool. The proceedings are taking place in London.
This lawsuit may signal that Slack considers the earlier European resolution insufficient to address its concerns about Microsoft’s conduct in the collaboration software market. By pursuing action in a UK court, Salesforce and Slack could be seeking additional remedies or damages beyond what was achieved through the European Commission process.
Source: Tech-Economic Times