dism /online /enable-feature /featurename:NetFX3 /All /Source:D:\sources\sxs /LimitAccess Use code with caution. Copied to clipboard : Tells Windows exactly where the .cab file is.
Enable-WindowsOptionalFeature -Online -FeatureName "NetFx3" -All -Source "C:\Temp"
You can use this link to download the file directly to your server. For maximum security and file integrity, follow these best practices:
This article provides a definitive, step-by-step walkthrough for obtaining a version of the Microsoft-Windows-NetFx3-OnDemand-Package.cab file specifically for Windows Server 2012 R2 , followed by guaranteed installation methods.