After upgrading to 12.56 I’ve noticed PC Hosts get stuck in an ‘Initializing‘ status. Use the query below if you have a PC Host that is stuck in the ‘Initializing‘ status to get it back in working order.
update [<DB_NAME_OF_LAB>].[dbo].[LAB_HOSTS]
set [HOST_RUNTIME_STATE] = ‘Idle’
where [HOST_ID] in ‘<Specify Host ID>’
StressingQuality 