Sometimes when you are trying to edit settings of a VM converted from template you will get below mentioned error.

Follow the steps mentioned below to solve the issue:

– Shutdown the VM

– Right click the VM and select Remove from Inventory.

– Go to the Datastore Browser and browse to VM folder which you just removed.  Right-click the .vmx file and select Add to Inventory.

That’s it. Now when you try to edit the settings of VM that error will not bother you.