When initiating a restart or shutdown the LogMeIn Hamachi client will be reported as preventing the restart or shutdown. It is resolved by forcing the process to be terminated.
I have observed this issue for a long time and it is becoming a concern due to it impact to the restart or shutdown process.
In addition I have found this to happen on remote hosts with Hamachi installed. The remote host will be blocked by the hamachi client during shutdown or reset. I am positive the RDP connection was not using Hamachi network connection.