Windows - Net Framework

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Press “Windows Logo” + “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.