You do not typically download this file directly from a website. It is located inside the sources\sxs folder of the official Windows ISO. the Windows 10/11 ISO from Microsoft . Mount the ISO file (right-click -> Mount).
(automatic when you enable the feature online)
If you mounted the ISO, you can use the sxs folder directly, which is often more reliable: Open Command Prompt as Admin. Run this command (replace D: with your ISO drive letter):
Right-click the button and select Terminal (Admin) or Windows PowerShell (Admin) . Microsoft-windows-netfx3-ondemand-package.cab Download
/LimitAccess : Prevents DISM from trying to contact Windows Update. Troubleshooting Common Errors
This error can occur if the local component store used by the Windows servicing stack is corrupted. Run the System File Checker tool to repair it.
The standard and most robust method to install this .cab file is by using the command-line tool. This is a powerful utility built into Windows used to service and prepare system images. The following steps provide a clear, foolproof way to complete the installation. You do not typically download this file directly
DISM cannot locate the .cab file or the file is corrupted. Solution:
This file is not malware, nor is it an optional bloatware. It is a critical Microsoft ( .cab ) that contains the complete, offline installer for .NET Framework 3.5 (which includes versions 2.0 and 3.0). This article provides everything you need to know: safe download sources, step-by-step installation guides, command-line methods, and solutions to common errors.
DISM /Mount-Wim /WimFile:C:\install.wim /Index:1 /MountDir:C:\mount DISM /Image:C:\mount /Add-Package /PackagePath:D:\sources\sxs\Microsoft-windows-netfx3-ondemand-package.cab DISM /Unmount-Wim /MountDir:C:\mount /Commit Mount the ISO file (right-click -> Mount)
If you have the Windows 10 or 11 ISO, mount it. Navigate to the \sources\sxs folder.
Disclaimer: Always ensure you have appropriate licensing for Windows ISOs and follow your organization’s IT security policies before deploying any system packages.
(Replace D: with the drive letter of your mounted ISO).
After restarting, you can verify that .NET Framework 3.5 is successfully installed.