You can change the memory configuration of a virtual machine's hardware when the virtual machine is powered on or powered off.

When you add memory to a virtual machine while it is powered on, the amount you add cannot exceed 16 times the amount of memory the virtual machine had when it was powered on.


In the Virtual Machine Properties Editor, click the Hardware tab.


Click Memory in the Hardware list.


Adjust the amount of memory allocated to the virtual machine.


Click OK to save your changes and close the dialog box.