Think of the .NET Framework as a critical engine that allows many Windows applications to run. Just as a car needs a specific engine to function, many older business tools, games (especially those built on early Unity engines), and proprietary software rely on the specifically to operate.
Open and note the exact Drive Letter assigned to the installation media (e.g., D: , E: , or F: ). Step 2: Run Command Prompt as Administrator Click the Windows Start menu. Type cmd . Right-click Command Prompt and select Run as administrator . Step 3: Execute the DISM Command
: Verify that your source path is correct. Ensure the drive letter matches your mounted ISO or USB. Also, ensure the version of the Windows 10 installation media matches the version build currently installed on your computer. Error Code 0x800F0954
Double-check your Windows 10 installation media drive letter. Ensure that the sources\sxs directory actually exists on that drive and contains the file named microsoft-windows-netfx3-ondemand-package~31bf3856ad364e35~amd64~~.cab . Error Code 0x800F0954 Net Framework 3.5 Offline Installer Windows 10 64 Bit
A progress bar will appear. Once it reaches 100%, the feature is enabled. Restart your computer if prompted. Microsoft Learn Method 2: Windows Features Dialog (Limited Offline Support)
Extract the downloaded installer files to a folder on the Windows 10 64-bit system.
Transfer the downloaded file ( dotnetfx35.exe ) to your offline Windows 10 computer. Think of the
The remains a critical component for running thousands of legacy Windows applications, desktop games, and enterprise software utilities. While Windows 10 (64-bit) comes pre-packaged with newer versions like .NET Framework 4.8, many older programs specifically target version 3.5 (which includes .NET 2.0 and 3.0).
This forces the installer to look locally first. If it fails, fall back to DISM.
The is essentially a .cab (cabinet) file or the sxs folder from a Windows 10 installation ISO. Once you have this local source, you can install .NET 3.5 on dozens of machines without an internet connection. Step 2: Run Command Prompt as Administrator Click
/Source:D:\sources\sxs : Specifies the local directory on your installation media where the payload files are hosted.
Method 3: Use the Windows Features Control Panel (Online Alternative)
If your computer has a stable, unrestricted internet connection, Windows will usually download these files automatically when a program requests them. However, if you are working , you need an offline installation method.
Open This PC and look for the newly mounted drive (for example, Drive D: , E: , or F: ).
To install .NET Framework 3.5 offline on a 64-bit Windows 10 architecture, you will need: