To avoid the "-Extra" headache across 100+ machines:
This guide covers everything from locating this file to fixing common installation errors like and 0x800F081F . Install .NET Framework 3.5 on Windows 10 - Microsoft Learn Microsoft-windows-netfx3-ondemand-package.cab -Extra
Typically, you wouldn't interact with this file directly. You would simply let Windows Update handle the installation. However, there are three common scenarios where you absolutely need this specific .cab file: To avoid the "-Extra" headache across 100+ machines:
: In some corporate environments, "Specify settings for optional component installation" must be enabled in Group Policy to allow local source files. Microsoft-windows-netfx3-ondemand-package.cab -Extra
