https://howitunfolded.com/court-cases/microsoft-teams-eu-antitrust-case/Slack complained to the European Commission in 2020 that Microsoft illegally tied its Teams app to Office 365 and Microsoft 365. The Commission opened an investigation in 2023 and set out preliminary objections in 2024, while Microsoft began selling its suites without Teams. In September 2025 the Commission made Microsoft's commitments binding, which closed the case without a fine.enhttps://howitunfolded.com/court-cases/microsoft-teams-eu-antitrust-case/#e15microsoft-teams-eu-antitrust-case-2269597422Fri, 12 Sep 2025 12:00:00 +0000The Commission accepted Microsoft's commitments in both cases and made them legally binding, which ended the investigations without a fine or a finding of infringement. The Commission said a monitoring trustee would oversee them and that a breach could bring a fine of up to 10 percent of worldwide annual turnover.https://howitunfolded.com/court-cases/microsoft-teams-eu-antitrust-case/#e16microsoft-teams-eu-antitrust-case-55c386997eFri, 12 Sep 2025 12:00:00 +0000Microsoft's vice president for European government affairs said the company would turn to implementing the commitments promptly and fully, according to the Financial Times and AFP.https://howitunfolded.com/court-cases/microsoft-teams-eu-antitrust-case/#e17microsoft-teams-eu-antitrust-case-abdfec9fb9Fri, 12 Sep 2025 12:00:00 +0000alfaview's chief executive said the decision would strengthen Europe's digital competitiveness, according to the company's statement.https://howitunfolded.com/court-cases/microsoft-teams-eu-antitrust-case/#e13microsoft-teams-eu-antitrust-case-68436eba23Mon, 16 Jun 2025 12:00:00 +0000After the consultation, which ran to 16 June, Microsoft agreed to raise the price difference between suites with and without Teams by 50 percent for some suites and to publish more interoperability information, the Commission said.https://howitunfolded.com/court-cases/microsoft-teams-eu-antitrust-case/#e12microsoft-teams-eu-antitrust-case-f6062f784cFri, 16 May 2025 12:00:00 +0000The Commission invited comments on commitments offered by Microsoft. They included selling suites without Teams at a lower price, giving customers recurring chances to switch, interoperability for rivals and data export for EEA customers, for seven years or ten years for interoperability and data portability.https://howitunfolded.com/court-cases/microsoft-teams-eu-antitrust-case/#e14microsoft-teams-eu-antitrust-case-e7f63771e7Tue, 01 Jul 2025 12:00:00 +0000Both complainants withdrew their complaints after the market test closed on 16 June 2025, according to the Commission, which gave no dates. alfaview said on 12 September 2025 that it had withdrawn a few weeks earlier.https://howitunfolded.com/court-cases/microsoft-teams-eu-antitrust-case/#e9microsoft-teams-eu-antitrust-case-9185bdb825Tue, 25 Jun 2024 12:00:00 +0000The Commission set out its preliminary view that Microsoft may have abused a dominant position by tying Teams to its suites since at least April 2019, and that interoperability limits may have made this worse. It said a confirmed infringement could bring a fine of up to 10 percent of worldwide annual turnover.https://howitunfolded.com/court-cases/microsoft-teams-eu-antitrust-case/#e10microsoft-teams-eu-antitrust-case-98162def7fTue, 25 Jun 2024 12:00:00 +0000The Commission opened a second investigation, Microsoft Teams II, following alfaview's complaint.https://howitunfolded.com/court-cases/microsoft-teams-eu-antitrust-case/#e11microsoft-teams-eu-antitrust-case-10c2768ba8Tue, 25 Jun 2024 12:00:00 +0000Salesforce, which by then owned Slack, responded to the Statement of Objections on the day it was announced and called for a quick remedy, in a note added to Slack's 2020 complaint post.https://howitunfolded.com/court-cases/microsoft-teams-eu-antitrust-case/#e8microsoft-teams-eu-antitrust-case-b7affe41aaMon, 01 Apr 2024 12:00:00 +0000Microsoft said it would sell Teams separately from Office globally, launching suites without Teams and a standalone Teams product for enterprise customers outside Europe, Reuters reported. The company said the change responded to Commission feedback.https://howitunfolded.com/court-cases/microsoft-teams-eu-antitrust-case/#e7microsoft-teams-eu-antitrust-case-14fb9e2dd8Sun, 01 Oct 2023 12:00:00 +0000Microsoft began selling its business suites without Teams in the EEA and Switzerland, Reuters reported. In June 2024 the Commission said it preliminarily found these changes insufficient.https://howitunfolded.com/court-cases/microsoft-teams-eu-antitrust-case/#e6microsoft-teams-eu-antitrust-case-fb1824ace8Thu, 31 Aug 2023 12:00:00 +0000Microsoft said it would sell its Microsoft 365 and Office 365 suites without Teams in the European Economic Area and Switzerland from 1 October 2023, at 2 euros a month less, and sell Teams separately to new enterprise customers for 5 euros a month. It also promised more interoperability resources for developers.https://howitunfolded.com/court-cases/microsoft-teams-eu-antitrust-case/#e5microsoft-teams-eu-antitrust-case-a0f0a0a00aThu, 27 Jul 2023 12:00:00 +0000The Commission opened proceedings to assess whether Microsoft breached Article 102 TFEU by tying Teams to its suites and possibly limiting interoperability with rival tools. It said opening the case did not prejudge the outcome.https://howitunfolded.com/court-cases/microsoft-teams-eu-antitrust-case/#e4microsoft-teams-eu-antitrust-case-308f78cfb4Thu, 20 Jul 2023 12:00:00 +0000The videoconferencing company alfaview GmbH filed a complaint about the same practice. The Commission later handled it in separate proceedings.https://howitunfolded.com/court-cases/microsoft-teams-eu-antitrust-case/#e2microsoft-teams-eu-antitrust-case-4c2462bc75Wed, 22 Jul 2020 12:00:00 +0000Slack said Microsoft had force-installed Teams for millions of users, blocked its removal and hidden its true cost from enterprise customers, and asked the Commission to act quickly. These were Slack's allegations.https://howitunfolded.com/court-cases/microsoft-teams-eu-antitrust-case/#e3microsoft-teams-eu-antitrust-case-676c6ae894Wed, 22 Jul 2020 12:00:00 +0000Microsoft said it looked forward to giving the Commission more information and argued that Teams had grown because it connected people by video, according to a WBEN report published by Audacy.https://howitunfolded.com/court-cases/microsoft-teams-eu-antitrust-case/#e1microsoft-teams-eu-antitrust-case-7b966f1d2cTue, 14 Jul 2020 12:00:00 +0000Slack Technologies filed a complaint alleging that Microsoft illegally tied Teams to its productivity suites, according to the Commission.https://howitunfolded.com/court-cases/microsoft-teams-eu-antitrust-case/#e0microsoft-teams-eu-antitrust-case-59f195f865Mon, 01 Apr 2019 12:00:00 +0000The Commission later said its concern that Microsoft tied Teams to its Office 365 and Microsoft 365 business suites covered the period since at least April 2019.