Thus, even on a modern Windows 11 PC, you may need this file.
No. That is a Windows update, not the base .NET 3.5 on-demand package. The base CAB does not contain “KB” in the name. Search again carefully. Download Microsoft-windows-netfx3-ondemand-package.cab
Microsoft-Windows-NetFx3-OnDemand-Package.cab is not magic – it’s a clean, signed component of Windows. Learning to use DISM with this CAB is an essential skill for any Windows sysadmin or advanced user supporting legacy applications. Thus, even on a modern Windows 11 PC, you may need this file
