User Configuration > Administrative Templates > Microsoft Excel 2016 > File Tab > Check Accessibility
User
HKCU\software\policies\microsoft\office\16.0\excel\accchecker
This policy setting prevents the Accessibility Checker from verifying that worksheets with content have non-default names. If you enable this policy setting, the Accessibility Checker will be prevented from verifying that worksheets with content have non-default names. If you disable or do not configure this policy setting, worksheet names will be checked and any issues will appear in the Accessibility Checker.