This RPC error indicates one of several possible problems:
1. There is a firewall somewhere in the network or on the server that is blocking the remote WMI requests.
2. Remote WMI has been disabled on the server.
3. The address of the server is not correct.
4. WMI has been entirely disabled or is corrupt on the server (more common than you would think.)
Unfortunately, WMI is not very firewall friendly and there is no simple way to open up ports for it. The best workaround here is to copy the Dellpack.exe collector to the machine in question and run it locally. We can take the resulting *.iokit files and generate a single PDF report, as long as the collection sessions roughly overlap in time.