Now that Windows is installed on your Virtual Machine, there are a few more things to install to make sure it works correctly in VirtualBox. In your Virtual Machine, go to the Devices menu and select "Insert Guest Additions CD Image."

If the installer program doesn't automatically start, navigate to "This PC" in Windows Explorer, and then double-click on the VirtualBox Guest Additions CD.

Double click the correct installer for your machine architecture, as shown in the image below. Follow the steps of the installer, and restart your machine when it is complete.

When your machine has restarted, your Windows Virtual Machine is ready to use! You can now install Visual Studio and complete your projects.