Microsoftwindowsnetfx3ondemandpackagecab Download — Server 2012 R2 New [upd]

This only installs .NET 3.5 (and 2.0/3.0). .NET 4.5+ is a separate feature.

On the page, click the link "Specify an alternate source path" at the bottom. This only installs

Enter the path to your sxs folder (e.g., D:\sources\sxs ) and click then Install . Troubleshooting Common Errors Unable install NetFX3 into Windows server 2012R2 which is approximately 69 MB

What the CAB Is

: Some community forums provide the standalone CAB file , which is approximately 69 MB, but using official Microsoft media is recommended for security and compatibility. Step-by-Step Installation Guide This only installs