Using (Deployment Image Servicing and Management) is the most reliable method, especially if the server is managed by WSUS , which often blocks these specific on-demand downloads. Installing .Net 3.5 on Windows 2012 R2 - Server Fault
Install from Windows installation media (sources\sxs) Using (Deployment Image Servicing and Management) is the
Searching for and downloading this specific .cab file from third-party websites (not Microsoft) poses significant risks: Using (Deployment Image Servicing and Management) is the
Enable .
If your organization has a volume licensing agreement, VLSC is the gold standard. Using (Deployment Image Servicing and Management) is the
file matches the OS version (Server 2012 R2). Using a file from a different version of Windows (like Windows 10 or Server 2019) can cause installation failures. Language Packs