SNMP.....what am I missing?

I have a ML350p Gen8 which I'm trying to monitor with SNMP but I can't do an SNMP walk against the Windows OS.

In SMH, I can see the status of the hardware, all good:

In services, I have 'Accept SNMP packets from any host':

But if I do a SNMP walk, I don't get anything back:

What am I missing?