.Net Framework should be built into Windows 10 already and you can enable it from control panel.
Do the following to enable .Net Framework on your Windows 10
- Press Windows + R keys on the keyboard.
- Type “appwiz.cpl” in the “Run” command box and press “ENTER”.
- In the “Programs and Features” window, click on the link “Turn Windows features on or off”.
- Check if the “.NET Framework 3.5 (includes .NET 2.0 and 3.0)” option is available in it.
- If yes, then enable it and then click on “OK”.
- Follow the on-screen instructions to complete the installation and restart the computer, if prompted