Install the .NET 3.5 framework from the Software Center
- Click on the Windows Start button in the lower left corner of the desktop.
- Type software center and Windows will automatically begin searching your hard drive.
- In the search results, click on the Software Center app.
- In the panel along the left edge of the Software Center window, make sure the Applications menu option is selected.
- Click on the .NET 3.5 on Win10... icon.
- Click on the Install button and follow the installation instructions.