Net Framework 3.5 Offline Installer Windows 10 64 Bit -

To install .NET Framework 3.5 (which includes .NET 2.0 and 3.0) on Windows 10 64-bit without an internet connection, you must use the original Windows 10 installation media (ISO or USB). Windows 10 does not come with a pre-packaged standalone "offline installer" exe in the traditional sense; instead, the necessary files are stored in the sources\sxs folder of your installation media. Microsoft Learn Method 1: Using DISM (Command Prompt)

Step 3: Run the Installer Run the installer (dotNetFx35setup.exe) and follow the prompts to install .NET Framework 3.5.

🔍 Alternative: Enable via Windows Features (Requires Internet) Net Framework 3.5 Offline Installer Windows 10 64 Bit

Q4: How big is the offline installer?

The microsoft-windows-netfx3-ondemand-package.cab is approximately 280 MB. The extracted installation consumes about 400 MB on your system drive.

"We couldn’t connect to the service. Error 0x800F0906." To install

He opened PowerShell as Admin on the Dell. The cursor blinked patiently.

Part 8: Security and Performance Considerations

A common myth: "Installing .NET Framework 3.5 weakens Windows 10 security." “The source files could not be found”: Ensure

Troubleshooting common errors

• “The source files could not be found”: Ensure /Source points to the correct ISO/USB drive and the path \sources\sxs exists and contains .cab files.
• “0x800f0954” or similar: Group Policy or WSUS blocking Windows Update access — use /LimitAccess with a local source or configure WSUS to allow feature installation.
• DISM failures: Run System File Checker first:

  sfc /scannow
  

  and retry with correct source.

Step 4: Activate the Framework Once installed, activate the framework by running the following command in the Command Prompt (as administrator):