VMwarevSphere Client link in vCenter Server host, open the virtual machine Tip: Do not allow the operation in the host state of the current connection

VMwarevSphere Client link in vCenter Server host, open the virtual machine Tip: operation is not allowed under the current host connection status of
many reasons that can lead to problems such as illegal shutdown of the vCenter Server.

Solution:
1, delete the ESXI host in vCenter Server, re-join.

or

2, the vCenter Server restart