Get-NetLocalGroup access

[s0i37]

Hello.
I am using RPC function NetLocalGroupEnum for gathering local groups and their members like a:
Get-NetLocalGroup -ComputerName 1.2.3.4
or
rpcclient 1.2.3.4 -c enumalsgroups
or
net rpc group list builtin -I 1.2.3.4
Sometimes I can do this, but sometimes some domain hosts don't return me anything information.
Can you please tell me why this approach doesn't work against some windows hosts. Both consist in the same domain.
Thank you.