Nagios Support Forum

After implementing group policy "Network security: LAN Manager authentication level" to "Send NTLMv2 responses only. Refuse LM & NTLM" in windows server nagios unable to monitor server health , it trow below error
"
UNKNOWN - The WMI query had problems. You might have your username/password wrong or the user's access level is too low. Wmic error text on the next line.
[librpc/rpc/dcerpc_util.cdcerpc_pipe_auth_recv()] Failed to bind to uuid 4d9f4ab8-7d1c-11cf-861e-0020af6e7c57 - NT_STATUS_NET_WRITE_FAULT
[librpc/rpc/dcerpc_connect.c:790:dcerpc_pipe_connect_b_recv()] failed NT status (c0000022) in dcerpc_pipe_connect_b_recv
[wmi/wmic.c:196:main()] ERROR: Login to remote object.
NTSTATUS: NT_STATUS_ACCESS_DENIED - Access denied

"

It looks like you were monitoring your Windows servers with WMI and you changed the policy and removed access to what was required to access the server.

Thank for your support, i'm able to rectify the issue , the issue was "subjected policy change force to use AD authentication when server is connect to the AD , with AD user and pass it was successful "