Microsoft has unveiled plans to integrate the JScript9Legacy engine as the default scripting engine in Windows 11 24H2 and future releases, gradually phasing out the traditional JScript engine. This strategic shift aims to elevate system security and operational efficiency by mitigating vulnerabilities inherent in the older engine, particularly risks related to cross-site scripting attacks. The JScript9Legacy engine incorporates more stringent execution policies and refined object handling mechanisms, significantly strengthening system defenses without compromising compatibility with existing scripts. Microsoft assures users that no additional configuration is required, as current scripts will continue to operate seamlessly while enjoying enhanced security measures.