I'm trying to use ServerManager.OpenRemote (from Microsoft.Web.Administration) but am unable to find documentation on how to give it different credentials from the current user. I tried SimpleImpersonation (from How do you do Impersonation in .NET?) and it gives me the same error:
System.UnauthorizedAccessException - Retrieving the COM class factory for remote component with CLSID {2B72133B-3F5B-4602-8952-803546CE3344} from machine [...] failed due to the following error: 80070005 [...]."
Firewall on the remote machine is off. UAC is disabled.
You must enable the remote server for remote configuration. Microsoft.Web.Administration uses AHADMIN DCOM service, so this should be open for remote access.
First, make sure you can change AHADMIN properties: https://serverfault.com/questions/242714/how-can-i-enable-ahadmin-properties
Then, follow these steps or use the provided script: http://mvolo.com/connecting-to-iis-70-configuration-remotely-with-microsoftwebadministration/
Also, check you have remote access permissions for AHADMIN using dcomcnfg. See how here http://support.microsoft.com/kb/176799 and here http://help.eprint.net/dcomconfig.htm
来源：https://stackoverflow.com/questions/22458410/credentials-for-servermanager-openremote