Which key combination is used to release control of a VM window?

The key combination used to release control of a virtual machine (VM) window in VMware environments is Ctrl + Alt. This combination is crucial when working with virtual machines because it allows the user to regain control of their host operating system's mouse and keyboard without the need to click outside the VM window or disrupt the session.

When a VM is running in full screen or windowed mode, the VM capture might prevent the mouse pointer from interacting with the host OS until it is released. By pressing Ctrl + Alt, the user signals to the VMware software that they want to exit the VM's control, effectively allowing them to seamlessly switch back to their host. This technique enhances user experience by making navigation between the host and VM smoother and more intuitive.

The other key combinations listed serve different functions and do not facilitate the release of VM control. Thus, understanding the function of Ctrl + Alt in this context is essential for anyone working with VMware virtualization software.