Microsoftwindowsnetfx3ondemandpackagecab Download ((new)) Server 2012 R2 New Info

If you want, I can provide exact step-by-step commands for your environment (local path, network share, or Group Policy), or generate a Group Policy template and a script to deploy across multiple servers.

Installing .NET Framework 3.5 on Windows Server 2012 R2 often requires the file, as the source files are not installed by default to save disk space. This guide explains how to acquire the necessary files and resolve common installation errors using the Microsoft Evaluation Center and standard administrative tools. If you want, I can provide exact step-by-step

Install-WindowsFeature -Name NET-Framework-Core -Source D:\sources\sxs If you want

The NetFX3 feature includes both .NET Framework 2.0 and 3.5. In Server 2012 R2, Microsoft introduced a "Feature on Demand" model. Instead of storing feature files directly in the WinSxS folder (saving disk space), the server is designed to fetch required binaries from Windows Update. or Group Policy)

dism /online /enable-feature /featurename:NetFx3ServerFeatures /all dism /online /enable-feature /featurename:NetFx3WCF /all