An update is available to address important upgrade-related issues for System Center Configuration Manager current branch, version 1610. The issues described in the article below apply only to sites that were upgraded to version 1610 before December 20, 2016. The fixes for these issues are incorporated into the builds of version 1610 that are available from December 20, 2016 onward.
J.C. Hornbeck, Solution Asset PM
Microsoft Enterprise Cloud Group