IBM IMM Remote Control

Perhaps W2k8 network driver interferes with IMM internal network interface? Go to UEFI setup (F1 at boot), IMM configuration, and disable the Ethernet-over-USB interface. It was called "commands over USB inteface" or something like that. Later, when Ethernet drivers are updated, you can enable it again.

When you execute commands remotely they are run with administrative privileges because only administrators are permitted to remotely execute commands in powershell. The error, "Exception calling "CreateUpdateDownloader" with "0" argument(s): "Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))"" is not a native powershell error, it indicates that this line is failing: $UpdatesDownloader = $UpdateSession.CreateUpdateDownloader(), this line is trying to create the updatedownloader object using the $UpdateSession = New-Object -ComObject Microsoft.Update.Session object.

Without knowing WHERE the downloader tries to reach out to, I can only assume the mothership, it may indicate that credentials you have while remotely connected to a server could be the subject of a proxy. This is a common security practice, users remotely connected to machines cannot download items directly from the internet (no matter how trusted the source).

Hope this helps, Chris