Nice post on different things to try, http://sccmbrokeit.blogspot.com/2013/10/sccm-2012-client-troubleshooting.html http://www.adaptiva.com/onesite/ http://blogs.msdn.com/b/scstr/archive/2012/05/31/configuration_2d00_manager_2d00_2012_2d00_sizing_2d00_considerations.aspx