I know this is old but I was hung up on the differences in syntax. Looks like hyper-v event logs don't use the commonly used forward slash  but uses a dash instead.  
Example: 
 Microsoft-Windows-Hyper-V-Hypervisor/Operational   
Microsoft-Windows-Hyper-V-Hypervisor/Admin   
VS   
Microsoft-Windows-Hyper-V-Hypervisor-Operational   
Microsoft-Windows-Hyper-V-Hypervisor-Admin   
 This stanza works for me. I am using a universal forwarder on a remote machine.   
[WinEventLog://Microsoft-Windows-Hyper-V-Hypervisor-Operational]  
disabled = 0 
 Also, make sure there are actual event entries in the Admin; mine was zero and took me a minute to figure that one out.  
						
					
					... View more