Install dotNET Framework 3.5 on Windows 11

Issue:

You may need the .NET Framework 3.5 to run an app on Windows 11 and receive an error when trying to run the installation.

Solution:

You can enable the .NET Framework 3.5 through the Windows Control Panel. This option requires an Internet connection.

  1. Type "Turn Windows features"  in Windows 11 search, and then click Turn Windows features on or off.

  2. select the .NET Framework 3.5 (includes .NET 2.0 and 3.0) check box, select OK, and reboot your computer if prompted.

You don't need to select the child items for Windows Communication Foundation (WCF) HTTP Activation and Windows Communication Foundation (WCF) Non-HTTP Activation unless you're a developer or server administrator who requires this functionality.