Hi, I have created a custom collection that looks for client =0 or =<Null>. This has been created on the Central site and this has replicated to child primary site. The contents of the collection on the central has 39 more clients than the child site. After comparing the difference, all 39 clients have the following properties - SMS Installed site is missing from the properties Client=0. The clients have been confirmed as working and recieving policy, updates and packages. All 39 have assigned site of the primary child. The Child site console reports these workstations having the client. It does seem that the Parent DB is out of sync / date. The primary child has the correct and upto date data, but the central site does not. Syncronisation and logs has no issues. Any help or advice would be great!

Is this ConfigMgr 2012, or 2007? which logs are you reading that say there are no issues? How frequently is your Heartbeat schedule on the child site? If it's the default of weekly, change it to daily. Standardize. Simplify. Automate.

Sorry Configmgr 2007 Despool, Dbm, Hman, Cscnfsvc, Inboxmgr and the other usual logs. Clients only report to our Primary child sites, so am I ok in disabling discovery on the central site? The child site discovery was one day. Thanks for your response.