Under certain conditions, you might be unable to hot plug memory to a virtual machine.

You try to hot plug memory to a virtual machine, but the operation is unsuccessful, and you receive the following error message.

Cannot complete the operation. The vRAM limit of 192GB will be exceeded. Upgrade the vCenter Server license or decrease the amount of the consumed vRAM.

The host where the virtual machine runs is licensed with vSphere 5.x Essentials. You cannot use more than 192GB of pooled vRAM for hosts that are licensed with vSphere 5.x Essentials. The amount of memory that you try to hot plug to the virtual machine will lead to exceeding 192GB for the consumed vRAM. For details about vRAM and vRAM pooling, see License Management and Reporting from vCenter Server and Host Management.

Reduce the amount of memory that is configured to the poweredon virtual machines.