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Technical Write-Up: Installing .NET Framework 3.5 on Windows Server 2012 R2 via CAB File

1. Overview

Objective
Install .NET Framework 3.5 (includes .NET 2.0 and 3.0) on Windows Server 2012 R2 without internet access or Windows Update, using the standalone feature-on-demand CAB package.

Here, /source points to the folder containing the .cab (not the .cab file itself). /limitaccess prevents DISM from contacting Windows Update. Technical Write-Up: Installing

Error: "0x800f081f"

Method 3: Using the Server Manager

Install from Windows installation media (sources\sxs) /limitaccess prevents DISM from contacting Windows Update

If you prefer a visual walkthrough, use the Add Roles and Features Wizard as detailed on Microsoft Learn: Technical Write-Up: Installing

Manual Installation via DISM:If you have the .cab file or the entire sxs folder copied to C:\NetFx3, run this command in an Elevated Command Prompt: