How to install .NET Framework 3.5 Offline in Windows 10
Windows 10 comes with .NET framework 4.5 pre-installed, but many apps developed in Vista and Windows 7 era require the .NET framework v3.5 installed along with 4.5. Some of windows application will not run on Windows 10 due to lack of windows .NET Framework 3.5 support.

The installations of .NET Framework 3.5 can be done using both online or offline methods. The following methods apply for those who doesn’t have any type of internet connection on their home or Windows Update does not function correctly to download and automatically install .NET Framework 3.5.


How to Install .NetFX3 on Windows 10?

1. Insert your Windows 10 Installation Media (DVD/USB), depending on what you have.

2. Open 'This PC' from Start Menu and note the drive letter of the Windows 10 installation media you have inserted. In my case it is drive letter F:

How to install .NET Framework 3.5 Offline in Windows 10 Lt0UCAY

3. In Windows 10 type cmd.exe into Start Menu, right-click on Cmd.exe, and open it as an administrator.

4. Execute the following command:

Code:

Dism  /Online  /Enable-Feature  /FeatureName:NetFX3  /All  /Source:F:\Sources\SXS   /LimitAccess


Replace F: with the drive letter for the Windows 10 installation media.

How to install .NET Framework 3.5 Offline in Windows 10 6qVx6he

You are done! This will install .NET framework 3.5 in Windows 10.

Details on command line parameters, for your reference and knowledge:

       

  • /Online targets the operating system you're running (instead of an offline Windows image).

           
  • /Enable-Feature /FeatureName:NetFx3 specifies that you want to enable the .NET Framework 3.5.

           
  • /All enables all parent features of the .NET Framework 3.5.

           
  • /LimitAccess prevents DISM from contacting Windows Update.

           
  • /Source specifies the location of the files needed to restore the feature (in this example, the f:\sources\sxs directory).