Network scan

I am trying to run a network scan and I am having some problems with it. It runs a simple scan and very basic info is written into asset inventory. I can see basic info for workstations that probe collected on given network range. However, it fails to collect detailed info by pushing SDPOD_MiniAgent onto the workstations. Account used for scanning is configured to be a local administrator on any machine within domain - this is configured on a domain controller. Here are relevant lines from probe's log:

23.6.2015. 14:59:27: [26] Last Error : 5 message : Access is denied

23.6.2015. 14:59:27: [26] Credential is invalid for 10.202.11.136 Connection Error : 5. Last Error : Access is denied

23.6.2015. 14:59:27: [26] Scan failed for : sva-cliinfo-mja.hzpp.hr Error Code: 12024, Connection Error : 5. Last Error : Access is denied

But... everything works fine when I go to specific computer and locally add account to administrator group. On the same machine I get nice result in log file and of course - all detailed information is written into asset inventory (hardware, software, etc.).

Obviously I am missing something.

Any help is appreciated