Microsoftwindowsnetfx3ondemandpackagecab __hot__ Download Server 2012 R2 New -

DISM /Online /Add-Package /PackagePath:C:\Temp\microsoft-windows-netfx3-ondemand-package.cab

reg add HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU /v UseWUServer /t REG_DWORD /d 1 /f

If PowerShell is restricted or encountering policy blocks, the command-line utility DISM interacts directly with the servicing stack. Open the as an Administrator. This file is not available as a direct

# Install .NET 3.5 from the CAB file dism /online /add-package /packagepath:"C:\Temp\microsoft-windows-netfx3-ondemand-package.cab"

To install .NET Framework 3.5 on , you typically need the microsoft-windows-netfx3-ondemand-package.cab file found on the original installation media. This file is not available as a direct standalone download from Microsoft; it is part of the "Payload" (Side-by-Side) folder on the OS disk. How to Obtain and Use the .cab File as they may contain altered payloads

DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:C:\Temp

When you attempt to install .NET Framework 3.5 via the "Add Roles and Features Wizard" or PowerShell in Server 2012 R2, you will likely encounter an error stating that the source files cannot be found. This happens because the feature files are purposefully excluded from the active OS installation to save space. This file is not available as a direct

Enable-WindowsOptionalFeature -Online -FeatureName "NetFx3" -All -Source "C:\Temp"

In many enterprise environments, Server 2012 R2 instances are isolated from the internet (Air-Gapped). Attempting to enable the feature via the Server Manager GUI or standard PowerShell commands without a source path typically results in or 0x800F081F , indicating the source files could not be found. Installation Methodology

If you do not have access to the ISO, you should download the file using an internet-connected machine directly via Microsoft’s official update catalog or evaluation center packages. Avoid downloading .cab files from third-party file-sharing websites, as they may contain altered payloads, malware, or incorrect architecture versions that can corrupt your component store. How to Install the CAB Package on Windows Server 2012 R2

: If you have the ISO or physical DVD, the file is located in the \sources\sxs directory.