-extra //top\\ | Microsoft-windows-netfx3-ondemand-package.cab

dism /online /enable-feature /featurename:NetFx3 /all /source:D:\sources\sxs /limitaccess

: While it remains an optional component, Microsoft has signaled a move toward decoupling .NET Framework 3.5 from standard Windows 11 setup processes starting in 2026, though it will likely remain available as an on-demand feature. Install .NET Framework 3.5 on Windows 10 - Microsoft Learn Microsoft-windows-netfx3-ondemand-package.cab -Extra

dism /online /enable-feature /featurename:NetFx3 /source:C:\NetFX3_Extra /all /limitaccess Microsoft-windows-netfx3-ondemand-package.cab -Extra

Elias opened the Command Prompt with Administrative rights. He didn't just need the file; he needed the Deployment Image Servicing and Management (DISM) tool to force the operating system to accept it. Microsoft-windows-netfx3-ondemand-package.cab -Extra