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Offline Install of .Net Framework 3.5 on Windows Server 2012 / Windows 8.1

By default the .Net 3.5 framework is not installed on Window 8 and 8.1. When enabling the feature it will download the needed files from Windows Update. If you have a slow or no internet connection it can be useful to install .Net Framework directly from the Windows 8 DVD.

DOT-Net Install Failed

.Net 3.5 fails to install without an Internet connection

Offline .Net Framework 3.5 Installation

  1. Insert the Windows 8.1 installation media
  2. Open an administrative cmd prompt or PowerShell
  3. Run the following command


DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:d:\sources\sxs


Assumes Windows 8.1 media is at "d:".

Offline DOT-Net Install Windows 8

.Net 3.5 installed directly from Windows 8 DVD



Neil Bryan
IT Consultant & Technical Trainer
Neil Bryan is an IT consultant and technical trainer specializing in VMware, Citrix and Microsoft virtualization and infrastructure.

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