The installation will begin, and you will see a progress bar. Once it reaches 100%, you will see a message that the operation completed successfully.
Open Command Prompt as Administrator and run the following command (assuming the file is in
DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /Source:C:\ /LimitAccess
You have three safe options to obtain the microsoft-windows-netfx3-on-demand-package.cab file without spending a cent:
This frustrating error often plagues users who have upgraded between major Windows versions (e.g., from Windows 10 to Windows 11). The CAB file from the original installation media no longer matches the current system build.