Installing .NET 3.5.1 without Internet with MDT

Step-by-step guide to Installing .NET 3.5.1 without Internet with MDT, including configuration, deployment, troubleshooting and practical administration

Useful external reference: Microsoft Learn.

Useful external reference: Microsoft Learn.

Setting the WindowsSource Variable

Useful external reference: Microsoft Learn.

To install .NET Framework 3.5.1 without an internet connection, you need to specify the local source path in the `customsettings.ini` file. This ensures that MDT uses the local source files during deployment.

Useful external reference: Microsoft Learn.

Steps to Configure MDT

Useful external reference: Microsoft Learn.

1. Modify the customsettings.ini File

Useful external reference: Microsoft Learn.

Open the `customsettings.ini` file located in the `Control` folder of your deployment share. Add or modify the `WindowsSource` variable to point to the location of your source files:

Useful external reference: Microsoft Learn.

[Settings]
Priority=Default
[Default]
WindowsSource="%DeployRoot%Operating SystemsISO Windows 8.1Sourcessxs"

This sets the source path for .NET Framework 3.5.1 installation files.

Useful external reference: Microsoft Learn.

2. Update the Task Sequence

Useful external reference: Microsoft Learn.

In the MDT Deployment Workbench, edit your task sequence to include the installation of .NET Framework 3.5.1. Add a step to install roles and features, specifying .NET Framework 3.5.1:

Useful external reference: Microsoft Learn.

Steps:

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  • Right-click your task sequence and select Properties.
  • Navigate to the Task Sequence tab.
  • Add a new step: Install Roles and Features.
  • Specify .NET Framework 3.5.1 as the feature to install.

Useful external reference: Microsoft Learn.

Installing .NET 3.5.1 Overview