VirtualBox is a product from Oracle that allows you to run one or more virtual machines on a computer. Many businesses use it to run various operating systems on one machine to access specialized ...

If the “Auto-resize Guest Display” is greyed out for you, go ahead and reboot your virtual machine and check if the issue is resolved. In case that doesn’t work, go ahead and restart your VirtualBox.

When you click the "Maximize" button in the upper right corner of the window while running a VirtualBox virtual machine, you might expect the application to enter full-screen mode. However, this isn't ...