To install .NET Framework 3.5 offline on Windows 10, the most reliable method is using the Deployment Image Servicing and Management (DISM) tool along with Windows 10 installation media (ISO or USB) . This method works without an internet connection because it uses files already present on the installation media. Official DISM Offline Method This process uses the original source files (specifically the sxs folder) to enable the feature. Prepare Windows 10 Media : Insert your Windows 10 USB or right-click your Windows 10 ISO file and select Mount . Identify the Drive Letter : Note the drive letter assigned to the mounted media (e.g., D: , E: , or G: ). Open Command Prompt as Admin : Search for cmd , right-click it, and choose Run as administrator . Run the Command : Copy and paste the following command, replacing D: with your actual drive letter: DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:D:\sources\sxs Verify : Once the progress bar reaches 100%, the message "The operation completed successfully" will appear. Alternative: Official Standalone Installer While DISM is preferred for offline use on Windows 10, Microsoft provides a Full Redistributable Package that can be downloaded once and used on other machines without internet. Microsoft .NET Framework 3.5 Service pack 1 (Full Package)
Here’s a detailed feature description for a .NET Framework 3.5 Offline Installer for Windows 10 , written as if for a product page, technical documentation, or software feature announcement.
Feature: .NET Framework 3.5 Offline Installer for Windows 10 Overview The .NET Framework 3.5 Offline Installer for Windows 10 enables developers, IT administrators, and enterprise users to install Microsoft’s legacy .NET runtime environment on Windows 10 without requiring an active internet connection. This feature is critical for running older applications that depend on .NET 2.0, 3.0, or 3.5, while providing full control over deployment in air-gapped or restricted networks.
Key Features 1. Complete Offline Installation net framework 3.5 download for windows 10 offline installer
No internet connection required during installation. Includes all necessary components: .NET Framework 2.0, 3.0, and 3.5 SP1. Single executable ( .exe or .cab ) for standalone use.
2. Native Windows 10 Compatibility
Works on all editions: Home, Pro, Enterprise, LTSC, and Education. Supports both 32‑bit (x86) and 64‑bit (x64) architectures. Fully integrated with Windows 10’s DISM (Deployment Image Servicing and Management) and Control Panel features. To install
3. Command‑Line & Silent Installation
Deploy via: dism /online /enable-feature /featurename:netfx3 /all /source:D:\sources\sxs /limitaccess
Supports unattended, silent installs for mass deployment. No user interaction required when using /quiet or /norestart flags. Prepare Windows 10 Media : Insert your Windows
4. Side‑by‑Side Execution
Does not replace or conflict with newer .NET versions (4.x or later). Allows legacy and modern applications to run simultaneously on the same system.