List of Public Microsoft Support Knowledge Base (KB) Articles for System Center 2012 Configuration Manager (ConfigMgr 2012)

Keep updated with the latest hotfixes!  This is a great reference to check on first when troubleshooting any issue.

https://social.technet.microsoft.com/wiki/contents/articles/9539.list-of-public-microsoft-support-knowledge-base-kb-articles-for-system-center-2012-configuration-manager-configmgr-2012.aspx?PageIndex=3