1. Preparation
1.1. Download Configuration Manager CB v1511 binary
1.2. Download Configuration Manager CB v1511 Hotfix KB3127032
1.3. Download WSUS Hotfix KB3095113
1.4. Backup the Configuration Manager/Server and test the backup by trying to recover it
1.5. Install latest Windows updates on Site Server
1.6. Make sure that you are running at least Configuration Manager RTM SP1 Version