You have a server that is running Microsoft SharePoint Foundation 2010 or Microsoft SharePoint Server 2010. When you try to open Central Administration on this server, you receive the following error message:
Invalid token for impersonation - it cannot be duplicated.
This problem occurs because of a race condition in common language runtime (CLR).
To work around this problem, reset Internet Information Services (IIS) on the server.
Article ID: 982262 - Last Review: Sep 22, 2011 - Revision: 1
Microsoft SharePoint Foundation 2010, Microsoft SharePoint Server 2010