Microsoftwindowsnetfx3ondemandpackagecab Download Server 2012 R2 New 2021 Site

To install on Windows Server 2012 R2 without an internet connection, you must use the microsoft-windows-netfx3-ondemand-package~31bf3856ad364e35~amd64~~.cab file found inside the original Windows Server 2012 R2 installation media volume. Microsoft does not provide a direct, standalone web download link for this specific .cab file, as it is legally tied to your operating system installation source.

Note: The /LimitAccess switch is critical. It prevents DISM from attempting to contact Windows Update online, forcing it to use your local CAB file exclusively. Option C: Using the Server Manager GUI

: If you have the ISO or physical DVD, the file is located in the \sources\sxs directory. To install on Windows Server 2012 R2 without

Why It Matters

Troubleshooting and Common Issues

Run gpupdate /force in an elevated command prompt to apply the changes immediately. Step-by-Step Installation Methods

It is not recommended to download .cab files from third-party sites, as they may be outdated or insecure. Mounting the ISO is the official and safe method. It prevents DISM from attempting to contact Windows

In domain environments, a Group Policy often forces the server to use a WSUS server for all updates, including features. Since WSUS doesn't store .NET 3.5 files, the installation fails.