User Configuration > Administrative Templates > Microsoft PowerPoint 2016 > File Tab > Check Accessibility
User
HKCU\software\policies\microsoft\office\16.0\powerpoint\accchecker
This policy setting prevents the Accessibility Checker from flagging section with default/untitled name. If you enable this policy setting, the Accessibility Checker will be prevented from flagging section with default/untitled name. If you disable or do not configure this policy setting, section will be scanned for valid name and the results will appear in the Accessibility Checker.