In modern versions of Windows (10 and 11), .NET Framework 3.5 serves as a cumulative package that automatically includes versions 2.0 and 3.0.

  • Microsoft.com → Download Center → “.NET Framework 3.5 SP1 Standalone”
  • File size: Approximately 231 MB (includes all components for x86 and x64)

If you have internet access and simply need to activate the framework, follow these steps:

  • /Online : Targets your running OS.
  • /Enable-Feature /FeatureName:NetFx3 : Activates .NET 3.5 (includes 2.0 & 3.0).
  • /All : Installs all parent features.
  • /LimitAccess : Prevents checking Windows Update.
  • /Source : Tells DISM where your offline installer files are (the ISO mount).

Expected Result: The operation will complete with "The operation completed successfully." or "A reboot is required."

Part 4: Step-by-Step Installation Guide (Offline Method)

Here is how to install .NET Framework 2.0 and 3.0 using the offline installer on a machine with no internet.

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