Hi Nail, I am facing problem after upgrading SCCM 2012 to SP1. I have CAS & 3 Primary sites below it. The Site Data & Global Replication is not working between the sites. CAS SCCM console opens up fine without "Read only Mode"However if I run "exec spdiagdrs" on CAS DB,its shows site in Maintenance Mode. I have opened CASE with Microsoft but still they are unable to get the solution. They are unable to get CAS out of Maintenance mode. Please help.