Net Framework 3.5 Offline |work| 95%

dism /online /enable-feature /featurename:NetFx3 /all /source:D:\sources\sxs /limitaccess (Replace D: with your Windows installation media or extracted ISO path.)

⭐⭐⭐⭐☆ (4/5) – Essential for its niche, but outdated for general use. net framework 3.5 offline