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RPC Unavailable error when configuring SPF2010 on DMZ

Posted By:      Posted Date: September 01, 2010    Points: 0   Category :SharePoint
I'm having trouble configuring SharePoint Foundation 2010 in a DMZ environment.  My SharePoint web and application server is on the DMZ, along with an Active Directory Read-Only Domain Controller.  My target database server is on the internal network, as is the AD domain control referenced by the RODC. When running the SharePoint Configuration Wizard, I answer all of the questions and it starts chugging along, creating an admin database, but the progress bar never advances past "task 3 of 10" before failing with the error: "An exception of type System.InvalidOperationException was thrown.  Additional exception information: An error occurred while getting information about the user netportal at server mydomain.net: The RPC server is unavailable" The RPC service is running on the web server, database server, and RODC. Is there some sort of temporary opening of AD access that needs to occur in order for SharePoint to successfully configure?  Should I configure the web/application server inside the corporate network, then move it to the DMZ afterwards? I'm thinking that SharePoint is having a problem with the RODC, but I'm not sure what. Has anyone else run into a situation like this?

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