Hi cindy951357 ,
Then when I create a new ubuntu 18 vm and click the triangle play button, the vm is just stuck there. And if I want to close the vm window, there is going to be a prompt which tells that virtual machine is buy
Could you please upload Fusion Support Bundle? It could be collected via Fusion Help -> Collect Support Information?Are you able to suspend or shutdown the VM after a while if you dismiss the 'virtual machine is buy' message?