The Competition Commission of India (CCI) reviewed a complaint regarding Microsoft's bundling of its Defender antivirus software with the Windows operating system. The CCI found insufficient evidence to support claims of market foreclosure or coercion, concluding that there was no prima facie violation of competition norms. The investigation focused on the antivirus software sector for Windows OS in India and the broader desktop and laptop security software market. The CCI noted that users are not required to use Microsoft Defender, as OEMs can install alternative antivirus solutions. Other operating systems also include built-in antivirus features, indicating no compulsion to use Microsoft Defender. The CCI found no breach of Section 4(2)(a)(i) of the Competition Act and determined that the antivirus solutions market remains competitive, with various established players thriving.