Opera has officially initiated an antitrust complaint against Microsoft in Brazil, claiming that the tech giant fosters an unfair competitive landscape that disadvantages alternative web browsers in favor of its own product, Edge. The Norway-based company argues that Microsoft’s agreements to designate Edge as the exclusive pre-installed browser on Windows devices create substantial barriers for other browsers, making it difficult for them to gain traction in the market. Furthermore, Opera has asserted that Microsoft employs various design tactics and dark patterns that discourage users from downloading and utilizing rival browsers, thus stifling fair competition. Opera is urging Brazil’s Administrative Council for Economic Defense (CADE) to take action and seek remedies against Microsoft’s practices.
In a statement, Aaron McParlan, general counsel for Opera, emphasized, “Microsoft thwarts browser competition on Windows at every turn. Initially, browsers like Opera are shut out from critical pre-installation opportunities.” He continued, “Subsequently, Microsoft complicates users’ efforts to download and utilize alternative browsers, further entrenching its dominance.” This situation highlights the ongoing struggle for market fairness in the tech landscape.
This legal dispute is not a new occurrence between these two technology companies. Previously, Opera took legal action against Microsoft in the EU, presenting a similar case that claimed the bundling of Internet Explorer constituted anticompetitive behavior. Although Opera did not succeed in that instance, it also argued that Microsoft should hold gatekeeper designation for the Edge browser under the EU’s Digital Markets Act, highlighting the ongoing tension and regulatory scrutiny surrounding technology giants and their market practices.









