How to the change default compatibility setting of a VM?

You can set the default compatibility for virtual machine creation on the host, cluster, or datacenter. These options ensure that when virtual machines are added to an existing vSphere environment, they will be compatible with the host versions that reside there.

The following conditions apply:

■	To set the default compatibility on the cluster, the cluster must contain hosts that are connected and not in maintenance mode.
■	A default compatibility setting on the host overrides a default cluster or datacenter setting.
■	A default compatibility setting on the cluster overrides a default datacenter setting.

Prerequisites

Required privileges:

■	On the host or cluster: Host.Inventory.Modify cluster
■	On the datacenter: Datacenter.Reconfigure datacenter

Procedure

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Select a host, cluster, or datacenter in the inventory. Option Action Host a Click the Manage tab, and click Settings. b In the Virtual Machines section, select Default VM Compatibility and click Edit. c Select the compatibility from the drop-down menu and click OK. Cluster a Click the Manage tab and click Settings. b Click the Edit button next to Default VM Compatibility. c Select the compatibility from the drop-down menu and click OK. Datacenter a Right-click the datacenter and select Edit Default VM Compatibility. b Select the compatibility from the drop-down menu and click OK.

When you create a virtual machine on one of these objects, the default compatibility setting is used.

1. Right Click on ESXi Host ---> All vCenter Actions ---> Edit defaultVMCompatibility

2. Then Select the Compatibility and Click on OK