When adding sites to IIS7 either by script or by editing the config files directly, you may receive an error in the sites list that says: Unknown: The object identifier does not represent a valid object. (Exception from HRESULT: 0x800710D8) I'm running multiple servers in an NLB setup, using the shared configuration feature of IIS7 (config files are stored on a SAN exposed through a CIFS share). My first thoughts were that this was probably related to the shared configuration / network access, but I'm able to reproduce the problem even with...