Here’s a post you can use (for a forum, blog, or internal IT knowledge base) explaining how to download and use the microsoft-windows-netfx3-ondemand-package.cab file for installing .NET Framework 3.5 on Windows 10/11.
dism /online /add-package /packagepath:D:\sources\sxs\microsoft-windows-netfx3-ondemand-package.cab
.cab is build-specific — use one from matching Windows version (e.g., 22H2, 23H2, 24H2).cab for public download — always extract from official ISORemember:
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