dism /online /get-features | findstr "NetFx3" You should see: State : Enabled
Introduction: The .NET Framework 3.5 Conundrum on Modern Servers If you manage a Windows Server 2012 R2 environment, you have likely encountered a frustrating circular dependency: a critical legacy application requires .NET Framework 3.5 (which includes 2.0 and 3.0), but your standard installation methods fail. The error message is vague, the official "Add Roles and Features Wizard" prompts you for a source path, and you are left searching for a solution. dism /online /get-features | findstr "NetFx3" You should
Forget the bloated ISO mounts and failed wizards. With a valid, digitally signed .cab file and the DISM commands outlined in this guide, you can install .NET Framework 3.5 on Windows Server 2012 R2 in under two minutes—cleanly, silently, and reliably. With a valid, digitally signed
The most reliable, modern solution is the . This file (often referred to as the "Features on Demand" package) allows system administrators to install .NET 3.5 without needing the original Windows Server 2012 R2 ISO mounted locally, without Windows Update, and without an active internet connection on the server itself. With a valid