Windows 11 now uses JScript9Legacy engine for improved security
Microsoft announced that it has replaced the default scripting engine JScript with the newer and more secure JScript9Legacy on Windows 11 version 24H2 and later. The decision is driven by security concerns, as JScript9Legacy is expected to offer better protection against web threats, such as cross-site scripting (XSS), and also improved performance. "To provide a more secure experience, beginning with Windows 11, version 24H2, JScript9Legacy is enabled by default to handle all scripting proces