While executing Federation Extensions for SharePoint 3.0 on Windows Server 2003, the utility fails with the following error:

ID1013: Could not access the server hosting the WS-Federation metadata document. Object Identifier (OID) is unknown


This is related to SHA2 support on Windows Server 2003.


Please see the following article for resolution:

More Information

This issue does not exist on Windows Server 2008 and later.