En Windows 10 y 11, este ejecutable a veces intenta conectarse a Windows Update. Si esto te sucede, el método recomendado es el uso de DISM (explicado abajo).
You can download the official directly from the Microsoft Download Center. This package contains everything needed to install the framework on any compatible Windows version. descargar net framework 3.5 offline
Dism /online /enable-feature /featurename:NetFx3 /All /Source:X:\sources\sxs /LimitAccess Use code with caution. En Windows 10 y 11, este ejecutable a
Dism /online /enable-feature /featurename:NetFX3 /All /Source:D:\sources\sxs /LimitAccess En Windows 10 y 11